drivers: bluetooth: Enable HAS_BT_CTLR for Silabs EFR32 driver

The controller behind the EFR32 driver is a local link layer
implementation, so it makes sense to select HAS_BT_CTLR.

Signed-off-by: Johan Hedberg <johan.hedberg@silabs.com>

Author: jhedberg

drivers/bluetooth/hci/Kconfig

@@ -126,6 +126,7 @@ config BT_SILABS_EFR32
 	select MBEDTLS
 	select MBEDTLS_PSA_CRYPTO_C
 	select MBEDTLS_ENTROPY_C
+	select HAS_BT_CTLR
 	help
 	  Use Silicon Labs binary Bluetooth library to connect to the
 	  controller.