firmware: qcom_scm: Pass arginfo for sec_wdog_trigger

As TZ expects an argument for the sec_wdog_scm call, send 1 aergument
while making the scm call.

Change-Id: Ic24271cc08c007046c22a4a5a42b598e7f338306
Signed-off-by: Prakruthi Deepak Heragu <pheragu@codeaurora.org>