ARM: dts: msm: Allow tx fifo resize for sec usb core on SM8150

This allows to increase fifo size for the functions require
bursting in super speed mode for high data rate.

Change-Id: I463a11c99b8e6e91fe250d6ce6d3e31b5e168197
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>