[nrf fromtree] Bluetooth: Host: Remove prompt from BT_ECC

This option only exposes internal APIs, so there should be no need to allow
applications to set an explicit value. Instead, users of the API should
select it through Kconfig.

Signed-off-by: Johan Hedberg <[email protected]>
(cherry picked from commit d3c8cb4)

Author: jhedberg

subsys/bluetooth/host/Kconfig

@@ -993,7 +993,7 @@ config BT_DF_VS_CONN_IQ_REPORT_16_BITS_IQ_SAMPLES
 endif # BT_DF
 
 config BT_ECC
-	bool "ECDH key generation support"
+	bool
 	select MBEDTLS if !BUILD_WITH_TFM
 	select MBEDTLS_PSA_CRYPTO_C if !BUILD_WITH_TFM
 	select PSA_WANT_ALG_ECDH
@@ -1002,8 +1002,8 @@ config BT_ECC
 	imply MBEDTLS_PSA_P256M_DRIVER_ENABLED if MBEDTLS_PSA_CRYPTO_C
 	select BT_LONG_WQ
 	help
-	  If this option is set PSA Crypto API library is used for performing ECDH
-	  operations needed e.g. by LE Secure Connections.
+	  If this option is set, internal APIs will be available to perform ECDH operations
+	  through the long work queue. operations needed e.g. by LE Secure Connections.
 
 endif # BT_HCI_HOST