[PATCH] missing declaration in firmware.h

Not all users of firmware.h care about struct device (or include
device.h, for that matter).
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/linux/firmware.h

@@ -7,6 +7,7 @@ struct firmware {
 	size_t size;
 	u8 *data;
 };
+struct device;
 int request_firmware(const struct firmware **fw, const char *name,
 		     struct device *device);
 int request_firmware_nowait(