Initial work to import the latest (1.1) hsa_ext_image extension. Change-Id: I4d55adb09ba4d4dbd43d47a4bc54077d4bc531d2
Testing: pre-checkin [git-p4: depot-paths = "//depot/stg/hsa/drivers/hsa/runtime/": change = 1251389]
[git-p4: depot-paths = "//depot/stg/hsa/drivers/hsa/runtime/": change = 1249136]