applications: nrf_desktop: align after BT_CONN_TX_MAX deprecation

Aligned the Bluetooth Kconfig configuration of the nRF Desktop
application after the BT_CONN_TX_MAX Kconfig option has been
deprecated.

Ref: NCSDK-34284

Signed-off-by: Kamil Piszczek <[email protected]>

Author: kapi-no

applications/nrf_desktop/Kconfig.ble

@@ -124,13 +124,13 @@ config BT_CONN_PARAM_UPDATE_TIMEOUT
 	  nRF Desktop peripherals update connection parameters earlier to lower
 	  HID data latency.
 
-config BT_ATT_TX_COUNT
+config BT_BUF_ACL_TX_COUNT
 	default 4
 	help
-	  This number of ATT buffers allows the nRF Desktop peripheral to
-	  simultaneously send two GATT notifications with HID reports (required
-	  for HID input report pipeline support), BAS notification, and an ATT
-	  response.
+	  This number of outgoing ACL buffers allows the nRF Desktop peripheral
+	  to simultaneously send two GATT notifications with HID reports
+	  (required for HID input report pipeline support), BAS notification,
+	  and an ATT response.
 
 config BT_ATT_SENT_CB_AFTER_TX
 	default y
@@ -140,12 +140,6 @@ config BT_ATT_SENT_CB_AFTER_TX
 	  latency of provided HID data. The ATT sent callback is used by the
 	  application to trigger sending subsequent HID report.
 
-config BT_CONN_TX_MAX
-	default BT_ATT_TX_COUNT
-	help
-	  For an nRF Desktop peripheral, the maximum number of pending TX
-	  buffers with a callback is aligned to the number of ATT buffers.
-
 config BT_GATT_CHRC_POOL_SIZE
 	default 7 if (DESKTOP_PERIPHERAL_TYPE_MOUSE && \
 		      !DESKTOP_CONFIG_CHANNEL_OUT_REPORT)
@@ -285,12 +279,12 @@ config BT_MAX_PAIRED
 	  Change the default value for the maximum number of paired devices
 	  to be compatible with the dongle bond count.
 
-config BT_ATT_TX_COUNT
+config BT_BUF_ACL_TX_COUNT
 	default 6
 	help
-	  This number of ATT buffers allows nRF Desktop dongles to connect with
-	  a subsequent peripheral before finishing subscribing for HID reports
-	  from the previously connected peripheral.
+	  This number of outgoing ACL buffers allows nRF Desktop dongles to
+	  connect with a subsequent peripheral before finishing subscribing for
+	  HID reports from the previously connected peripheral.
 
 endif # DESKTOP_BT_CENTRAL
 
@@ -308,6 +302,16 @@ config BT_CTLR_CONN_PARAM_REQ
 	  nRF Desktop devices disable support for the Connection Parameter
 	  Request feature as it is not needed.
 
+if BT_LL_SOFTDEVICE
+
+config BT_CTLR_SDC_TX_PACKET_COUNT
+	default BT_BUF_ACL_TX_COUNT
+	help
+	  The number of ACL TX packets must be aligned between the Bluetooth
+	  Controller and Host.
+
+endif # BT_LL_SOFTDEVICE
+
 endif # HAS_BT_CTLR
 
 config BT_DEVICE_NAME
@@ -342,6 +346,18 @@ config BT_SETTINGS_CCC_LAZY_LOADING
 	  descriptor to speed up reconnections and reduce delay for the
 	  first HID report.
 
+config BT_ATT_TX_COUNT
+	default BT_BUF_ACL_TX_COUNT
+	help
+	  For an nRF Desktop device, the maximum number of ATT buffers
+	  is aligned to the number of outgoing ACL buffers.
+
+config BT_L2CAP_TX_BUF_COUNT
+	default BT_BUF_ACL_TX_COUNT
+	help
+	  For an nRF Desktop device, the maximum number of L2CAP buffers
+	  is aligned to the number of outgoing ACL buffers.
+
 choice BT_HCI_CORE_LOG_LEVEL_CHOICE
 	default BT_HCI_CORE_LOG_LEVEL_WRN
 	help