i2c: ite: Use proper flexible array

Use proper flexible array instead of a GNU extension.

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

Author: Flavio Ceolin

drivers/i2c/i2c_ite_enhance.c

@@ -53,7 +53,7 @@ struct i2c_cq_packet {
 	uint8_t id;
 	uint8_t cmd_l;
 	uint8_t cmd_h;
-	uint8_t wdata[0];
+	FLEXIBLE_ARRAY_DECLARE(uint8_t, wdata);
 };
 #endif /* CONFIG_I2C_IT8XXX2_CQ_MODE */