drm/amd: update mtype flags for gfx 9.5.0

Update mtype flags to meet gfx 9.5.0 requirements for remote GPU
memory and system memory.

Signed-off-by: Alex Sierra <alex.sierra@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Reviewed-by: Harish Kasiviswanathan <harish.kasiviswanathan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>