anv: add missing MEDIA_STATE_FLUSH for internal shaders
Replicating what we do in genX_cmd_compute.c Signed-off-by:Lionel Landwerlin <lionel.g.landwerlin@intel.com> Fixes: 7ca5c848 ("anv: add support for simple internal compute shaders") Reviewed-by:
Tapani Pälli <tapani.palli@intel.com> Part-of: <mesa/mesa!30539> (cherry picked from commit 4f093b2e)