soc: qcom: mem-offline: add pasr support for rpm-smd based targets

Some targets have RPM than RPMh controllers where the message format to the
controller is different.
Add support for it.

Change-Id: Icb1056badac7ef17df2a52a5f725d9f8aa96503e
Signed-off-by: Charan Teja Reddy <charante@codeaurora.org>
[guptap@codeaurora.org: resolve trivial merge conflicts.]
Signed-off-by: Prakash Gupta <guptap@codeaurora.org>