[PATCH] USB: drivers/usb/storage/libusual

This patch adds a shim driver libusual, which routes devices between
usb-storage and ub according to the common table, based on unusual_devs.h.
The help and example syntax is in Kconfig.

Signed-off-by: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
index f5f47a3..76904ad 100644
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -1134,3 +1134,27 @@
 		US_SC_SCSI, US_PR_SDDR55, NULL,
 		US_FL_SINGLE_LUN),
 #endif
+
+/* Control/Bulk transport for all SubClass values */
+USUAL_DEV(US_SC_RBC, US_PR_CB, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_8020, US_PR_CB, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_QIC, US_PR_CB, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_UFI, US_PR_CB, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_8070, US_PR_CB, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_SCSI, US_PR_CB, USB_US_TYPE_STOR),
+
+/* Control/Bulk/Interrupt transport for all SubClass values */
+USUAL_DEV(US_SC_RBC, US_PR_CBI, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_8020, US_PR_CBI, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_QIC, US_PR_CBI, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_UFI, US_PR_CBI, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_8070, US_PR_CBI, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_SCSI, US_PR_CBI, USB_US_TYPE_STOR),
+
+/* Bulk-only transport for all SubClass values */
+USUAL_DEV(US_SC_RBC, US_PR_BULK, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_8020, US_PR_BULK, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_QIC, US_PR_BULK, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_UFI, US_PR_BULK, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_8070, US_PR_BULK, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_SCSI, US_PR_BULK, 0),