ARM: dts: msm: Add custom ACC for APC on 8909w

Update the memory-accelerator (ACC) settings for 8909w
as per the hardware recommendation.

Change-Id: I9800a3157670b2f0e61f316dfef03b193293f03e
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>