Minor fix to hsa_amd_image_descriptor_t.

Change uint32_t data[0]; to uint32_t data[1];

[git-p4: depot-paths = "//depot/stg/hsa/drivers/hsa/runtime/": change = 1251050]

runtime/hsa-runtime/inc/hsa_ext_amd.h

@@ -1139,7 +1139,7 @@ typedef struct hsa_amd_image_descriptor_s {
   /*
   Start of vendor specific data.
   */
-  uint32_t data[0];
+  uint32_t data[1];
 } hsa_amd_image_descriptor_t;
 
 /**