qcom: scm: Add scm_call_atomic1_1() support

Add scm_call_atomic1_1(), which supports passing one argument
to the secure context in and returns a value via a pointer,
in addition to success/error code as the functions return
value.

Change-Id: I95f6c49094a0104e890c2405a7f68a0ad317db2d
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>