ARM: dts: msm: Fix shader memory physical location in dtsi file

The shader memory phys addr and size in the gpu dtsi file were
recorded incorrectly causing crashes in snapshot. Correct the
phys addr location and size parameters.

Change-Id: Ibb2eefde9b866ba85cc55fd24d16fb7c18b131da
Signed-off-by: Shrenuj Bansal <shrenujb@codeaurora.org>