wcnss: Notify Kernel suspend/resume to WCNSS

Notify WCNSS when the Kernel is suspended and also when it resumes.
Certain notifications from WCNSS are not required when Apps is
suspended.

Change-Id: I4e237d4793803798c599d4659bb2d7c0e496a393
Signed-off-by: Sameer Thalappil <sameert@codeaurora.org>