USB: usb-storage: added missing MODULE_LICENSE("GPL") for usb-storage ums-* modules

The lack of a MODULE_LICENSE macro in ums-* subdrivers prevented them
from loading. Needs to be applied after Alan Stern's usb-storage
subdriver separation patchset. Also added missing MODULE_DESCRIPTION and
MODULE_AUTHOR entries.

Signed-off-by: Maciej Grela <maciej.grela@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Matthew Dharm <mdharm-usb@one-eyed-alien.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/storage/isd200.c b/drivers/usb/storage/isd200.c
index df94300..882c57b 100644
--- a/drivers/usb/storage/isd200.c
+++ b/drivers/usb/storage/isd200.c
@@ -59,6 +59,9 @@
 #include "debug.h"
 #include "scsiglue.h"
 
+MODULE_DESCRIPTION("Driver for In-System Design, Inc. ISD200 ASIC");
+MODULE_AUTHOR("Björn Stenberg <bjorn@haxx.se>");
+MODULE_LICENSE("GPL");
 
 static int isd200_Initialization(struct us_data *us);