media: imx: imx7-mipi-csis: Cleanup includes

Remove unneeded includes, add needed ones, and sort them alphabetically.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Rui Miguel Silva <rmfrfs@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/staging/media/imx/imx7-mipi-csis.c

@@ -14,15 +14,14 @@
 #include <linux/errno.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
-#include <linux/irq.h>
 #include <linux/kernel.h>
-#include <linux/mfd/syscon.h>
 #include <linux/module.h>
-#include <linux/of_graph.h>
+#include <linux/mutex.h>
+#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
-#include <linux/reset.h>
 #include <linux/regulator/consumer.h>
+#include <linux/reset.h>
 #include <linux/spinlock.h>
 
 #include <media/v4l2-device.h>