drm/amdgpu/gfx10: use INVALIDATE_TLBS to invalidate TLBs v2

For MES queue VM flush, use INVALIDATE_TLBS to invalidate TLBs.
This packet can let CP firmware to determine the current vmid
and inv eng to invalidate.

v2: unify invalidate_tlbs functions

Cc: Le Ma <le.ma@amd.com>
Signed-off-by: Jack Xiao <Jack.Xiao@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>