[media] media: platform: soc_camera_platform : constify v4l2_subdev_* structures

v4l2_subdev_{core/video}_ops structures are stored in the
fields of the v4l2_subdev_ops structure which are of type const.
Also, v4l2_subdev_ops structure is passed to a function
having its argument of type const. As these structures are never
modified, so declare them as const.
Done using Coccinelle:(One of the scripts)

@r1 disable optional_qualifier @
identifier i;
position p;
@@
static struct v4l2_subdev_core_ops i@p = {...};

@ok1@
identifier r1.i;
position p;
struct v4l2_subdev_ops obj;
@@
obj.core=&i@p;

@bad@
position p!={r1.p,ok1.p};
identifier r1.i;
@@
i@p

@depends on !bad disable optional_qualifier@
identifier r1.i;
@@
+const
struct v4l2_subdev_core_ops i;

File size before:
text data bss dec hex filename
858 576 0 1434 59a soc_camera/soc_camera_platform.o

File size after:
text data bss dec hex filename
1234 192 0 1426 592 soc_camera/soc_camera_platform.o

Signed-off-by: Bhumika Goyal <[e-mail]>
Signed-off-by: Guennadi Liakhovetski <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/platform/soc_camera/soc_camera_platform.c

···
 	return soc_camera_set_power(p->icd->control, &p->icd->sdesc->subdev_desc, NULL, on);
 }
 
-static struct v4l2_subdev_core_ops platform_subdev_core_ops = {
+static const struct v4l2_subdev_core_ops platform_subdev_core_ops = {
 	.s_power = soc_camera_platform_s_power,
 };
 
···
 	return 0;
 }
 
-static struct v4l2_subdev_video_ops platform_subdev_video_ops = {
+static const struct v4l2_subdev_video_ops platform_subdev_video_ops = {
 	.s_stream	= soc_camera_platform_s_stream,
 	.g_mbus_config	= soc_camera_platform_g_mbus_config,
 };
···
 	.set_fmt	= soc_camera_platform_fill_fmt,
 };
 
-static struct v4l2_subdev_ops platform_subdev_ops = {
+static const struct v4l2_subdev_ops platform_subdev_ops = {
 	.core	= &platform_subdev_core_ops,
 	.video	= &platform_subdev_video_ops,
 	.pad	= &platform_subdev_pad_ops,