Bluetooth: Mesh: disable HUK for nrf52 ble mesh

Commit disables HUK usage for nrf52 ble mesh samples
since this requires separate PM region and breaks
backward compatibility with previous ble mesh releases.

Signed-off-by: Aleksandr Khromykh <[email protected]>

Author: alxelax

subsys/bluetooth/mesh/Kconfig

@@ -35,9 +35,14 @@ config BT_MESH_PSA_CRYPTO_STORAGE
 	imply TRUSTED_STORAGE
 	imply MBEDTLS_PSA_CRYPTO_STORAGE_C
 
+choice TRUSTED_STORAGE_BACKEND_AEAD_KEY
+	default TRUSTED_STORAGE_BACKEND_AEAD_KEY_HASH_UID if SOC_SERIES_NRF52X
+
+endchoice # TRUSTED_STORAGE_BACKEND_AEAD_KEY
+
 config BT_MESH_CRYPTO_KEY_INITIALIZER
 	bool
-	default y
+	default y if TRUSTED_STORAGE_BACKEND_AEAD_KEY_DERIVE_FROM_HUK
 	imply HW_UNIQUE_KEY_WRITE_ON_CRYPTO_INIT if HW_UNIQUE_KEY_SUPPORTED
 
 endif # BT_SETTINGS