ARM: dts: msm: Define OSM cycle counter parameters for msmcobalt

Define the OSM and XO clock rates necessary for performance
estimation using the OSM cycle counter. These parameters vary
based upon the platform.

Signed-off-by: Osvaldo Banuelos <osvaldob@codeaurora.org>
CRs-Fixed: 987865
Change-Id: I721dc3488484b66e3f88cbebf626e88176f08a44