ARM: dts: msm: Enable remotefs for lito

Enable rmtfs module for modem processor, which needs access
to store data onto eMMC/UFS device.
The shared memory size used by modem and apps for this purpose is 2MB.

Change-Id: I4722845cd6edfbb7de66652c5f77781439673b93
Signed-off-by: Ankit Jain <jankit@codeaurora.org>