drm/vmwgfx: Command parser fixes for DX

Implement support for a couple of missing commands and fix a command parser
error path. Also fix uninitialized devcaps and surface size computation.

Signed-off-by: Charmaine Lee <charmainel@vmware.com>
Signed-off-by: Sinclair Yeh <syeh@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_context.c b/drivers/gpu/drm/vmwgfx/vmwgfx_context.c
index abfe67c..b14583d 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_context.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_context.c
@@ -37,6 +37,7 @@
 	struct vmw_cmdbuf_res_manager *man;
 	struct vmw_resource *cotables[SVGA_COTABLE_DX10_MAX];
 	spinlock_t cotable_lock;
+	struct vmw_dma_buffer *dx_query_mob;
 };
 
 static void vmw_user_context_free(struct vmw_resource *res);