media: rcar_jpu: Fix fall-through warnings for Clang

In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning
by explicitly adding a break statement instead of letting the code fall
through to the next case.

Link: https://github.com/KSPP/linux/issues/115

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/media/platform/rcar_jpu.c

@@ -648,6 +648,7 @@ static u8 jpu_parse_hdr(void *buffer, unsigned long size, unsigned int *width,
 			if (get_word_be(&jpeg_buffer, &word))
 				return 0;
 			skip(&jpeg_buffer, (long)word - 2);
+			break;
 		case 0:
 			break;
 		default: