ARM: dts: msm: correct sps register space size

fsm9900 has bam-dma hs. It has 30 pipes, and 15 channels.
bam-dma on other msm soc has 20 pipes and 10 channels. This patch
sets the sps register space size according to bam-dma hs hw definitions.

Change-Id: I8817f92669255ffee76283d65500cb4519c0a31a
Acked-by: Chemin Hsieh <cheminh@qti.qualcomm.com>
Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>