ARM: dts: msm: config correct fetch IDs for samarium

The DMA and RGB fetch IDs for pipes in MDP 1.4
changed from predecessor chipsets. Update
the correct fetch IDs in DT.

Change-Id: Ia54e01835ab78c49c36d87643f2aad5a1fee72d3
Signed-off-by: Manoj Rao <manojraj@codeaurora.org>