soc_camera: soc_scale_crop: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE

This change resolves a new compile-time warning
when built as a loadable module:

WARNING: modpost: missing MODULE_LICENSE() in drivers/media/platform/soc_camera/soc_scale_crop.o see include/linux/module.h for more information

This adds the license as "GPL", which matches the header of the file.

MODULE_DESCRIPTION and MODULE_AUTHOR are also added.

---
 drivers/media/platform/soc_camera/soc_scale_crop.c | 4 ++++
 1 file changed, 4 insertions(+)

index 0116097c0c0f..092c73f24589 100644
@@ -419,3 +419,7 @@ void soc_camera_calc_client_output(struct soc_camera_device *icd,
 	mf->height = soc_camera_shift_scale(rect->height, shift, scale_v);
 }
 EXPORT_SYMBOL(soc_camera_calc_client_output);
+
+MODULE_DESCRIPTION("soc-camera scaling-cropping functions");
+MODULE_AUTHOR("Guennadi Liakhovetski <[email protected]>");
+MODULE_LICENSE("GPL");

2.14.1