soc: qcom: smp2p: Implementing thaw callback

Implementing thaw callback in smp2p driver to avoid
device hang in wakeup source trash since freeze gets
called twise in consecitive cycle and restore never
get called in case of hibernation failure which will
cause consecutive execution of the wakeup source trash
API.

Change-Id: I129739b590eefd18c556603f2bba22d9022ae2c7
Signed-off-by: Arun Prakash <app@codeaurora.org>