Allows having KVStore in internal and update image in external flash

Fixes a bug where it has not been possible to have KVStore in internal
flash while an update image image has been kept in external storage.

Author: Veijo Pesonen

features/storage/kvstore/direct_access_devicekey/DirectAccessDevicekey.cpp

@@ -123,6 +123,9 @@ int  get_expected_internal_TDBStore_position(uint32_t *out_tdb_start_offset, uin
     } else if (strcmp(STR(MBED_CONF_STORAGE_STORAGE_TYPE), "TDB_EXTERNAL") == 0) {
         *out_tdb_start_offset =  MBED_CONF_STORAGE_TDB_EXTERNAL_INTERNAL_BASE_ADDRESS;
         tdb_size = MBED_CONF_STORAGE_TDB_EXTERNAL_RBP_INTERNAL_SIZE;
+    } else if (strcmp(STR(MBED_CONF_STORAGE_STORAGE_TYPE), "TDB_INTERNAL") == 0) {
+        *out_tdb_start_offset =  MBED_CONF_STORAGE_TDB_INTERNAL_INTERNAL_BASE_ADDRESS;
+        tdb_size = MBED_CONF_STORAGE_TDB_INTERNAL_INTERNAL_SIZE;
     } else if (strcmp(STR(MBED_CONF_STORAGE_STORAGE_TYPE), "default") == 0) {
 #if COMPONENT_QSPIF || COMPONENT_SPIF || COMPONENT_DATAFLASH
         *out_tdb_start_offset =  MBED_CONF_STORAGE_TDB_EXTERNAL_INTERNAL_BASE_ADDRESS;