msm: usb: Add multi-lun support for UMS

UMS(usb mass storage) need a new lun for internal
storage.So add a new lun number for internal mass storage.

Change-Id: I17ccb8f85d458567a1f1b35366b8b0834397601f
Signed-off-by: Jin Wu <jinw@codeaurora.org>
3 files changed