drm/radeon: rework VMID handling

Move binding onto the ring, simplifying handling a bit.

Signed-off-by: Christian König <deathsimple@vodafone.de>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon_asic.c b/drivers/gpu/drm/radeon/radeon_asic.c
index 4a6e39f..98c586ac 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.c
+++ b/drivers/gpu/drm/radeon/radeon_asic.c
@@ -1375,7 +1375,6 @@
 	.vm = {
 		.init = &cayman_vm_init,
 		.fini = &cayman_vm_fini,
-		.bind = &cayman_vm_bind,
 		.page_flags = &cayman_vm_page_flags,
 		.set_page = &cayman_vm_set_page,
 	},
@@ -1480,7 +1479,6 @@
 	.vm = {
 		.init = &cayman_vm_init,
 		.fini = &cayman_vm_fini,
-		.bind = &cayman_vm_bind,
 		.page_flags = &cayman_vm_page_flags,
 		.set_page = &cayman_vm_set_page,
 	},
@@ -1585,7 +1583,6 @@
 	.vm = {
 		.init = &si_vm_init,
 		.fini = &si_vm_fini,
-		.bind = &si_vm_bind,
 		.page_flags = &cayman_vm_page_flags,
 		.set_page = &cayman_vm_set_page,
 	},
@@ -1599,7 +1596,7 @@
 			.ring_test = &r600_ring_test,
 			.ib_test = &r600_ib_test,
 			.is_lockup = &si_gpu_is_lockup,
-			.vm_flush = &cayman_vm_flush,
+			.vm_flush = &si_vm_flush,
 		},
 		[CAYMAN_RING_TYPE_CP1_INDEX] = {
 			.ib_execute = &si_ring_ib_execute,
@@ -1610,7 +1607,7 @@
 			.ring_test = &r600_ring_test,
 			.ib_test = &r600_ib_test,
 			.is_lockup = &si_gpu_is_lockup,
-			.vm_flush = &cayman_vm_flush,
+			.vm_flush = &si_vm_flush,
 		},
 		[CAYMAN_RING_TYPE_CP2_INDEX] = {
 			.ib_execute = &si_ring_ib_execute,
@@ -1621,7 +1618,7 @@
 			.ring_test = &r600_ring_test,
 			.ib_test = &r600_ib_test,
 			.is_lockup = &si_gpu_is_lockup,
-			.vm_flush = &cayman_vm_flush,
+			.vm_flush = &si_vm_flush,
 		}
 	},
 	.irq = {