[media] atomisp: fixed sparse warnings

Added "static" storage class to 4 not-declared functions
Signed-off-by: Avraham Shukron <avraham.shukron@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/media/atomisp/platform/intel-mid/atomisp_gmin_platform.c

@@ -436,7 +436,7 @@ static int gmin_gpio1_ctrl(struct v4l2_subdev *subdev, int on)
 	return -EINVAL;
 }
 
-int gmin_v1p2_ctrl(struct v4l2_subdev *subdev, int on)
+static int gmin_v1p2_ctrl(struct v4l2_subdev *subdev, int on)
 {
 	struct gmin_subdev *gs = find_gmin_subdev(subdev);
 
@@ -455,7 +455,8 @@ int gmin_v1p2_ctrl(struct v4l2_subdev *subdev, int on)
 
 	return -EINVAL;
 }
-int gmin_v1p8_ctrl(struct v4l2_subdev *subdev, int on)
+
+static int gmin_v1p8_ctrl(struct v4l2_subdev *subdev, int on)
 {
 	struct gmin_subdev *gs = find_gmin_subdev(subdev);
 	int ret;
@@ -491,7 +492,7 @@ int gmin_v1p8_ctrl(struct v4l2_subdev *subdev, int on)
 	return -EINVAL;
 }
 
-int gmin_v2p8_ctrl(struct v4l2_subdev *subdev, int on)
+static int gmin_v2p8_ctrl(struct v4l2_subdev *subdev, int on)
 {
 	struct gmin_subdev *gs = find_gmin_subdev(subdev);
 	int ret;
@@ -527,7 +528,7 @@ int gmin_v2p8_ctrl(struct v4l2_subdev *subdev, int on)
 	return -EINVAL;
 }
 
-int gmin_flisclk_ctrl(struct v4l2_subdev *subdev, int on)
+static int gmin_flisclk_ctrl(struct v4l2_subdev *subdev, int on)
 {
 	int ret = 0;
 	struct gmin_subdev *gs = find_gmin_subdev(subdev);