virgl: update minor differences to upstream header

virgl_protocol.h is considered to have it's upstream in the
virglrenderer repository, and somehow these minor differences has
crept in.

Let's sync with the upstream to avoid this.

Signed-off-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>

src/gallium/drivers/virgl/virgl_protocol.h

@@ -83,7 +83,6 @@ enum virgl_context_cmd {
    VIRGL_CCMD_CREATE_SUB_CTX,
    VIRGL_CCMD_DESTROY_SUB_CTX,
    VIRGL_CCMD_BIND_SHADER,
-
    VIRGL_CCMD_SET_TESS_STATE,
    VIRGL_CCMD_SET_MIN_SAMPLES,
    VIRGL_CCMD_SET_SHADER_BUFFERS,
@@ -521,6 +520,7 @@ enum virgl_context_cmd {
 #define VIRGL_MEMORY_BARRIER_SIZE 1
 #define VIRGL_MEMORY_BARRIER_FLAGS 1
 
+/* launch grid */
 #define VIRGL_LAUNCH_GRID_SIZE 8
 #define VIRGL_LAUNCH_BLOCK_X 1
 #define VIRGL_LAUNCH_BLOCK_Y 2