ARM: dts: msm: Increasing the CMA size

Since dual wlan cards attach take up more than 30M
DMA contiguous memory, so increasing the CMA size
to fix calling dma_alloc_coherent failure issue
from wlanhost driver side.

Change-Id: Iae43f0654d4400a9cde884809f565d2e9011267b
Signed-off-by: Chaoli Zhou <zchaoli@codeaurora.org>