msm: platsmp: Update the scm call for setting boot address

Update the scm call for setting boot address for secondary
cores. With the updated TZ 4.0, the previous scm call was failing
to set the boot address. Taking reference from 3.18 platsmp
'commit 883d4e0dc498 ("iio: imu: Add support to ASM330LHH")'.

Change-Id: I04889d60406926f57a81f4b053dcf2c75552332d
Signed-off-by: Jagadeesh Banisetti <jbanis@codeaurora.org>
Signed-off-by: Shadab Naseem <snaseem@codeaurora.org>