drm/omap: dpi: Sort includes alphabetically

This makes it easier to quickly locate duplicate includes.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Tested-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200226112514.12455-46-laurent.pinchart@ideasonboard.com

drivers/gpu/drm/omapdrm/dss/dpi.c

@@ -9,20 +9,20 @@
 
 #define DSS_SUBSYS_NAME "DPI"
 
-#include <linux/kernel.h>
+#include <linux/clk.h>
 #include <linux/delay.h>
-#include <linux/export.h>
 #include <linux/err.h>
 #include <linux/errno.h>
+#include <linux/export.h>
+#include <linux/kernel.h>
+#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/consumer.h>
 #include <linux/string.h>
-#include <linux/of.h>
-#include <linux/clk.h>
 #include <linux/sys_soc.h>
 
-#include "omapdss.h"
 #include "dss.h"
+#include "omapdss.h"
 
 struct dpi_data {
 	struct platform_device *pdev;