soc: qcom: ignore identical thermal state callbacks for CDSP

CDSP and HVX based cooling devices from cdsprm module forward
the thermal state requests to CDSP subsystem. Thermal throttle
driver samples tsens post suspend-resume and sends desired
thermal state to all registered cooling devices. CDSP and HVX
cooling devices don't check if the same thermal state has been
sent by throttle driver, this results in unnecessary rpmsg based
CDSP communication which wakes up CDSP affecting power during the
resume sequence. Ignore identical thermal state notifications from
throttle driver for CDSP and HVX cooling devices.

Change-Id: I50f8725271f7669453ff24766d20f3261c52d665
Acked-by: Sreekanth Gande <sgande@qti.qualcomm.com>
Signed-off-by: Tharun Kumar Merugu <mtharu@codeaurora.org>