secure_storage: remove experimental status from compatibility option

CONFIG_SECURE_STORAGE_TRUSTED_STORAGE_COMPATIBILITY has sufficient
testing, so remove its experimental status.

Signed-off-by: Tomi Fontanilles <tomi.fontanilles@nordicsemi.no>

Author: tomi-font

subsys/secure_storage/compatibility/Kconfig

@@ -2,13 +2,12 @@
 # SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
 
 config SECURE_STORAGE_TRUSTED_STORAGE_COMPATIBILITY
-	bool "Trusted storage backward compatibility [EXPERIMENTAL]"
+	bool "Trusted storage backward compatibility"
 	depends on SECURE_STORAGE_ITS_STORE_IMPLEMENTATION_SETTINGS || \
 		SECURE_STORAGE_ITS_STORE_IMPLEMENTATION_CUSTOM
 	depends on (SETTINGS_ZMS || SETTINGS_ZMS_LEGACY || \
 		(SETTINGS_NVS && !SOC_SERIES_NRF54L)) || \
 		SECURE_STORAGE_ITS_STORE_IMPLEMENTATION_CUSTOM
-	select EXPERIMENTAL
 	select SECURE_STORAGE_64_BIT_UID
 	select SECURE_STORAGE_ITS_STORE_SETTINGS_NAME_CUSTOM \
 		if SECURE_STORAGE_ITS_STORE_IMPLEMENTATION_SETTINGS