drm/amdkfd: Set per-process flags only once for gfx9/10/11/12

drm/amdkfd: Set per-process flags only once for gfx9/10/11/12

[ Upstream commit 61972cd93af70738a6ad7f93e17cc7f68a01e182 ]

Define set_cache_memory_policy() for these asics and move all static
changes from update_qpd() which is called each time a queue is created
to set_cache_memory_policy() which is called once during process
initialization

Signed-off-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Reviewed-by: Amber Lin <Amber.Lin@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>