ARM: dts: mdm: Add USB TX FIFO size information with mdmcalifornium

Each USB IN endpoint's FIFO (TX FIFO) is resized. Hence add available
max USB TX FIFO size to make sure that TX FIFO resize functionaliy
doesn't allocate more than available TX FIFO space.

Change-Id: I6e0f989fb6a02d7e43127b872ae80674f22447cb
Signed-off-by: Mayank Rana <mrana@codeaurora.org>