[PATCH] cdrom: use unsigned bitfields

Fix 23 of these sparse warnings on x86_64 allmodconfig:
include/linux/cdrom.h:942:19: error: dubious bitfield without explicit
`signed' or `unsigned'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Jens Axboe <axboe@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/linux/cdrom.h

@@ -939,7 +939,7 @@ struct cdrom_device_info {
 	int speed;			/* maximum speed for reading data */
 	int capacity;			/* number of discs in jukebox */
 /* device-related storage */
-	int options		: 30;	/* options flags */
+	unsigned int options	: 30;	/* options flags */
 	unsigned mc_flags	: 2;	/* media change buffer flags */
     	int use_count;                  /* number of times device opened */
     	char name[20];                  /* name of the device type */