Revert "drm/amdgpu/vpe: don't emit cond exec command under collaborate mode"

Ready now. Remove this workaround.
This reverts commit d40f6213.
Signed-off-by: Lang Yu <Lang.Yu@amd.com>
Tested-by: Alan Liu <haoping.liu@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_vpe.c

@@ -575,9 +575,6 @@ static unsigned int vpe_ring_init_cond_exec(struct amdgpu_ring *ring,
 {
 	unsigned int ret;
 
-	if (ring->adev->vpe.collaborate_mode)
-		return ~0;
-
 	amdgpu_ring_write(ring, VPE_CMD_HEADER(VPE_CMD_OPCODE_COND_EXE, 0));
 	amdgpu_ring_write(ring, lower_32_bits(addr));
 	amdgpu_ring_write(ring, upper_32_bits(addr));