ARM: dts: msm: Update the MHI configuration for Genoa

The EE(excute environment) & BHIE definition are
different for HST & Genoa, so in order to make current
kernel also support Genoa, add the extra EE & BHIE offset
definiton in the dts for Genoa, and then the MHI driver
can parse them to get the correct ones to overwrite the
default values.

Change-Id: Ic2580710f40f29270e77ffb24530ba4a60186626
Signed-off-by: Chaoli Zhou <zchaoli@codeaurora.org>