ARM: dts: msm: Add the timeout properties to votable GDSCs on MSM8996

The votable GDSCs might take longer than the default time of
100usecs to enable. Add the qcom,gds-timeout property for them
to make this time configurable.

CRs-Fixed: 1023031
Change-Id: I167e0e98185441a220772ec18397fcf845a3e925
Signed-off-by: Deepak Katragadda <dkatraga@codeaurora.org>