drivers/video/c2p.c: add MODULE_LICENSE

This patch adds the missing MODULE_LICENSE("GPL").
Reported-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/video/c2p.c

@@ -12,6 +12,7 @@
  *  for more details.
  */
 
+#include <linux/module.h>
 #include <linux/string.h>
 #include "c2p.h"
 
@@ -227,3 +228,4 @@ void c2p(u8 *dst, const u8 *src, u32 dx, u32 dy, u32 width, u32 height,
     }
 }
 
+MODULE_LICENSE("GPL");