zephyr: Kconfig: SOC_GECKO_CUSTOM_RADIO_PHY option for RAIL for proprietary

Currently on zephyr, RAIL library is used only by Bluetooth applications,
with this update, it will be able to be used for sample applications
for custom radio phys.
All files were copied from Silicon Labs GSDK v4.2.4.

Signed-off-by: Zoltan Havas <zoltan.havas@silabs.com>

soc/arm/silabs_exx32/Kconfig

@@ -340,4 +340,13 @@ config SOC_GECKO_USE_RAIL
 	  hardware. This option enable the proper set of features to allow to properly compile
 	  with the RAIL blob.
 
+config SOC_GECKO_CUSTOM_RADIO_PHY
+	bool "Use RAIL for custom radio phy packet sending and receiving"
+	depends on SOC_GECKO_HAS_RADIO
+	select SOC_GECKO_USE_RAIL
+	help
+	  If enabled, RAIL can be used for user generated custom radio phy
+	  management, sending and receiving packets on radio phy. User has
+	  to provide the radio_config.c and radio_config.h files for the phy.
+
 endif # SOC_FAMILY_EXX32

west.yml

@@ -219,7 +219,7 @@ manifest:
       groups:
         - hal
     - name: hal_silabs
-      revision: d191d981c4eb20c0c7445a4061fcdbcfa686113a
+      revision: 72a67203f0b37dc2c12bfae5ddf05c991c0ab0a4
       path: modules/hal/silabs
       groups:
         - hal