add razr v3xx US_FL_FIX_CAPACITY flag to unusual_devs.h in usb-storage

This is another Motorola phone that incorrectly reports the sector count
(off by one).

Problem Description: io errors when mounting phone's sd-card via the
phones usb port

Steps to reproduce: mount Motorola Razr v3xx phones sd-card on Linux Desktop
via usb cable. Phones USB port must be in memory card mode.

DEBUG output:
Jul 9 19:32:41 micky kernel: Buffer I/O error on device sdd, logical block 3970048
Jul 9 19:32:41 micky kernel: sd 11:0:0:0: [sdd] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE,SUGGEST_OK
Jul 9 19:32:41 micky kernel: sd 11:0:0:0: [sdd] Sense Key : Medium Error [current]
Jul 9 19:32:41 micky kernel: sd 11:0:0:0: [sdd] Add. Sense: No additional sense information
Jul 9 19:32:41 micky kernel: end_request: I/O error, dev sdd, sector 3970048


From: Jost Diederichs <jost@qdusa.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>