ARM: dts: msm: Add G-Link SSR entry for secure processor for MSMCOBALT

The G-Link SSR entry for secure processor tells the G-Link SSR driver
which processors to notify when the secure processor restarts, and which
transport to use for the notifications.

Change-Id: I9da7c8836f320b0550e405e4f047abc3961a012f
Signed-off-by: Steven Cahail <scahail@codeaurora.org>