ARM: dts: msm: Move SPSS device specific info for MSMCOBALT.

Move SCSR register offsets and bit positions specific to SPSS from
driver to device tree entry.

CRs-Fixed: 972423
Change-Id: I9712cc550b858af54c90ae92c8636e1d37b3f993
Signed-off-by: Puja Gupta <pujag@codeaurora.org>