ext_manifest: define EMPTY with explicit 0

Explicitly EMPTY is added as 0 for ext manifest config data.

Signed-off-by: Fred Oh <fred.oh@linux.intel.com>

Author: fredoh9

src/include/kernel/ext_manifest.h

@@ -47,6 +47,7 @@ enum ext_man_elem_type {
 
 /* EXT_MAN_ELEM_CONFIG_DATA elements identificators */
 enum config_elem_type {
+	EXT_MAN_CONFIG_EMPTY		= 0,
 	EXT_MAN_CONFIG_IPC_MSG_SIZE	= 1,
 	EXT_MAN_CONFIG_MEMORY_USAGE_SCAN = 2, /**< ABI3.18 */
 	EXT_MAN_CONFIG_LAST_ELEM,	/**< keep it at the end of enum list */

src/platform/intel/cavs/include/cavs/ext_manifest.h

@@ -12,6 +12,7 @@
 
 /* EXT_MAN_ELEM_PLATFORM_CONFIG_DATA elements identificators */
 enum cavs_config_elem_type {
+	EXT_MAN_CAVS_CONFIG_EMPTY	= 0,
 	EXT_MAN_CAVS_CONFIG_LPRO	= 1,
 	EXT_MAN_CAVS_CONFIG_OUTBOX_SIZE,
 	EXT_MAN_CAVS_CONFIG_INBOX_SIZE,