bt: audio: Use proper flexible array

0 length array is a GNU extension. Use proper C99 flexible
array.

Signed-off-by: Flavio Ceolin <[email protected]>

Author: ceolin

subsys/bluetooth/audio/has_internal.h

@@ -68,7 +68,7 @@ struct bt_has {
 
 struct bt_has_cp_hdr {
 	uint8_t opcode;
-	uint8_t data[0];
+	uint8_t data[];
 } __packed;
 
 struct bt_has_cp_read_presets_req {
@@ -80,25 +80,25 @@ struct bt_has_cp_read_preset_rsp {
 	uint8_t is_last;
 	uint8_t index;
 	uint8_t properties;
-	uint8_t name[0];
+	uint8_t name[];
 } __packed;
 
 struct bt_has_cp_preset_changed {
 	uint8_t change_id;
 	uint8_t is_last;
-	uint8_t additional_params[0];
+	uint8_t additional_params[];
 } __packed;
 
 struct bt_has_cp_generic_update {
 	uint8_t prev_index;
 	uint8_t index;
 	uint8_t properties;
-	uint8_t name[0];
+	uint8_t name[];
 } __packed;
 
 struct bt_has_cp_write_preset_name {
 	uint8_t index;
-	uint8_t name[0];
+	uint8_t name[];
 } __packed;
 
 struct bt_has_cp_set_active_preset {

subsys/bluetooth/audio/pacs_internal.h

@@ -23,12 +23,12 @@ struct bt_pac_codec {
 struct bt_pac_ltv {
 	uint8_t  len;
 	uint8_t  type;
-	uint8_t  value[0];
+	uint8_t  value[];
 } __packed;
 
 struct bt_pac_ltv_data {
 	uint8_t  len;
-	struct bt_pac_ltv data[0];
+	struct bt_pac_ltv data[];
 } __packed;
 
 struct bt_pacs_read_rsp {

subsys/bluetooth/audio/tbs_internal.h

@@ -246,12 +246,12 @@ struct bt_tbs_call_cp_retrieve {
 
 struct bt_tbs_call_cp_originate {
 	uint8_t opcode;
-	uint8_t uri[0];
+	uint8_t uri[];
 } __packed;
 
 struct bt_tbs_call_cp_join {
 	uint8_t opcode;
-	uint8_t call_indexes[0];
+	uint8_t call_indexes[];
 } __packed;
 
 union bt_tbs_call_cp_t {