ARM: dts: msm: Add support for new memory map for apq8026

A new memory map is required for certain variants of the apq8026
platform to reduce the memory usage.

Change-Id: Ib9b9cdff67659c397deade46e73b779d1392a51c
Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>