drm: update VIA driver to 2.7.2

Add PCI DMA blitengine to VIA DRM
Add portability code for porting VIA to FreeBSD.
Sync via_drm.h with 3d driver

From: Thomas Hellstrom <unichrome@shipmail.org>, Eric Anholt <anholt@freebsd.org>
Signed-off-by: Dave Airlie <airlied@linux.ie>
diff --git a/drivers/char/drm/via_mm.c b/drivers/char/drm/via_mm.c
index 3baddac..62e6925 100644
--- a/drivers/char/drm/via_mm.c
+++ b/drivers/char/drm/via_mm.c
@@ -199,13 +199,13 @@
 				 sizeof(mem));
 
 	switch (mem.type) {
-	case VIDEO:
+	case VIA_MEM_VIDEO:
 		if (via_fb_alloc(&mem) < 0)
 			return -EFAULT;
 		DRM_COPY_TO_USER_IOCTL((drm_via_mem_t __user *) data, mem,
 				       sizeof(mem));
 		return 0;
-	case AGP:
+	case VIA_MEM_AGP:
 		if (via_agp_alloc(&mem) < 0)
 			return -EFAULT;
 		DRM_COPY_TO_USER_IOCTL((drm_via_mem_t __user *) data, mem,
@@ -232,7 +232,7 @@
 	if (block) {
 		fb.offset = block->ofs;
 		fb.free = (unsigned long)block;
-		if (!add_alloc_set(fb.context, VIDEO, fb.free)) {
+		if (!add_alloc_set(fb.context, VIA_MEM_VIDEO, fb.free)) {
 			DRM_DEBUG("adding to allocation set fails\n");
 			via_mmFreeMem((PMemBlock) fb.free);
 			retval = -1;
@@ -269,7 +269,7 @@
 	if (block) {
 		agp.offset = block->ofs;
 		agp.free = (unsigned long)block;
-		if (!add_alloc_set(agp.context, AGP, agp.free)) {
+		if (!add_alloc_set(agp.context, VIA_MEM_AGP, agp.free)) {
 			DRM_DEBUG("adding to allocation set fails\n");
 			via_mmFreeMem((PMemBlock) agp.free);
 			retval = -1;
@@ -297,11 +297,11 @@
 
 	switch (mem.type) {
 
-	case VIDEO:
+	case VIA_MEM_VIDEO:
 		if (via_fb_free(&mem) == 0)
 			return 0;
 		break;
-	case AGP:
+	case VIA_MEM_AGP:
 		if (via_agp_free(&mem) == 0)
 			return 0;
 		break;
@@ -329,7 +329,7 @@
 
 	via_mmFreeMem((PMemBlock) fb.free);
 
-	if (!del_alloc_set(fb.context, VIDEO, fb.free)) {
+	if (!del_alloc_set(fb.context, VIA_MEM_VIDEO, fb.free)) {
 		retval = -1;
 	}
 
@@ -352,7 +352,7 @@
 
 	via_mmFreeMem((PMemBlock) agp.free);
 
-	if (!del_alloc_set(agp.context, AGP, agp.free)) {
+	if (!del_alloc_set(agp.context, VIA_MEM_AGP, agp.free)) {
 		retval = -1;
 	}