drm/sun4i: mixer: Order includes alphabetically

Includes are not alphabetically ordered.

Reorder them.
Reviewed-by: NChen-Yu Tsai <wens@csie.org>
Signed-off-by: NJernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: NMaxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180710203511.18454-10-jernej.skrabec@siol.net

drivers/gpu/drm/sun4i/sun8i_mixer.c

@@ -21,8 +21,8 @@
 
 #include <linux/component.h>
 #include <linux/dma-mapping.h>
-#include <linux/reset.h>
 #include <linux/of_device.h>
+#include <linux/reset.h>
 
 #include "sun4i_drv.h"
 #include "sun8i_mixer.h"