bluetooth: controller: Update fsu, sci, efs configs and docs

We can now remove experimental from the fsu and efs configs.
Also sci configs have been upmerged from zephyr so are no
longer required.

Update docs for efs, fsu and sci software maturity.

Signed-off-by: Sean Madigan <[email protected]>

Author: sean-madigan

doc/nrf/releases_and_maturity/software_maturity.rst

@@ -588,6 +588,27 @@ The following table indicates the software maturity levels of the support for ea
              - Supported
              - Supported
              - Supported
+           * - **Shorter Connection Intervals**
+             - Supported
+             - Supported
+             - Supported
+             - Supported
+             - Supported
+             - Supported
+           * - **Frame Space Update**
+             - Supported
+             - Supported
+             - Supported
+             - Supported
+             - Supported
+             - Supported
+           * - **Extended Feature Set**
+             - Supported
+             - Supported
+             - Supported
+             - Supported
+             - Supported
+             - Supported
 
      .. group-tab:: nRF53 Series
 
@@ -627,6 +648,12 @@ The following table indicates the software maturity levels of the support for ea
              - Supported
            * - **L2CAP Connection Oriented Channels**
              - Supported
+           * - **Shorter Connection Intervals**
+             - Supported
+           * - **Frame Space Update**
+             - Supported
+           * - **Extended Feature Set**
+             - Supported
 
      .. group-tab:: nRF54H Series
 
@@ -666,6 +693,12 @@ The following table indicates the software maturity levels of the support for ea
              - Supported
            * - **L2CAP Connection Oriented Channels**
              - Supported
+           * - **Shorter Connection Intervals**
+             - Supported
+           * - **Frame Space Update**
+             - Supported
+           * - **Extended Feature Set**
+             - Supported
 
      .. group-tab:: nRF54L Series
 
@@ -769,6 +802,24 @@ The following table indicates the software maturity levels of the support for ea
              - Supported
              - Experimental
              - Experimental
+           * - **Shorter Connection Intervals**
+             - Supported
+             - Supported
+             - Supported
+             - Experimental
+             - Experimental
+           * - **Frame Space Update**
+             - Supported
+             - Supported
+             - Supported
+             - Experimental
+             - Experimental
+           * - **Extended Feature Set**
+             - Supported
+             - Supported
+             - Supported
+             - Experimental
+             - Experimental
 
      .. group-tab:: nRF91 Series
 
@@ -856,6 +907,21 @@ The following table indicates the software maturity levels of the support for ea
              - --
              - --
              - --
+           * - **Shorter Connection Intervals**
+             - --
+             - --
+             - --
+             - --
+           * - **Frame Space Update**
+             - --
+             - --
+             - --
+             - --
+           * - **Extended Feature Set**
+             - --
+             - --
+             - --
+             - --
 
   | [1]: Subject to RAM availability
   | [2]: Do not support encrypting and decrypting the Isochronous Channels packets

subsys/bluetooth/controller/Kconfig

@@ -293,19 +293,6 @@ config BT_CTLR_DF_CONN_CTE_RSP
 config BT_CTLR_ADV_EXT_PDU_EXTRA_DATA_MEMORY
 	bool
 
-config BT_CTLR_SHORTER_CONNECTION_INTERVALS_SUPPORT
-	bool
-
-config BT_CTLR_SHORTER_CONNECTION_INTERVALS
-	bool "Shorter Connection Intervals"
-	depends on BT_CTLR_SHORTER_CONNECTION_INTERVALS_SUPPORT
-	depends on BT_CTLR_EXTENDED_FEAT_SET
-	depends on BT_CTLR_SUBRATING
-	select BT_CTLR_SET_HOST_FEATURE
-	help
-	  Enable support for Bluetooth 6.2 Shorter Connection Intervals
-	  in the controller.
-
 choice BT_LL_SOFTDEVICE_VARIANT
 	prompt "SoftDevice Controller variant"
 	default BT_LL_SOFTDEVICE_MULTIROLE if ((BT_OBSERVER && BT_BROADCASTER) || \
@@ -549,9 +536,6 @@ config BT_CTLR_SDC_CIS_SUBEVENT_LENGTH_US
 	  If this parameter is set to zero, the subevent length
 	  is chosen by the controller.
 
-config BT_CTLR_EXTENDED_FEAT_SET
-	select EXPERIMENTAL
-
 config BT_CTLR_SDC_EXTENDED_FEAT_MAX_REMOTE_PAGE
 	int "Number of supported remote feature pages"
 	depends on BT_CTLR_EXTENDED_FEAT_SET
@@ -565,7 +549,7 @@ config BT_CTLR_SDC_EXTENDED_FEAT_MAX_REMOTE_PAGE
 	  Each feature page requires approximately 24 bytes of RAM per link.
 
 config BT_CTLR_FRAME_SPACE_UPDATE
-	select EXPERIMENTAL
+	depends on BT_CTLR_EXTENDED_FEAT_SET
 
 config BT_CTLR_CHANNEL_SOUNDING
 	bool "Channel Sounding support [EXPERIMENTAL for nRF54H20 radio core]"