ARM: dts: msm: Add virtio spmi and pmic gpios on sa6155p and sa8155 VMs

Add spmi pmic gpios some of which are must for peripherals'
functionality on virtual platforms. But disable virtio spmi
for SA8195 first for no requirement now.

Change-Id: I66beb779cb0761dba008202fdf9d90db0ec2cdc9
Signed-off-by: Yimin Peng <yiminp@codeaurora.org>