ARM: dts: msm: Add entries for virtual SSR notifications on SA6155 VM

Add ADSP and WLAN as clients of the virtual SSR notification
framework to support subsystem state notification virtualization.

Change-Id: I5add1e953abb8c133b62c395284b2f2de82cdc36
Signed-off-by: Anant Goel <anantg@codeaurora.org>