drivers: qcom: Add SCM API support for armv7

SCM APIs support is added for tz_log,msm-poweroff,
watchdog for mdm9607 target.

Change-Id: I7574e12b831dac471d449722138daf77b07075ed
Signed-off-by: Hari babu <haribabu@codeaurora.org>
Signed-off-by: Sivasri Kumar Vanka <sivasri@codeaurora.org>