ARM: dts: msm: Disable defer regulator_disable() for atoll GPU SMMU

Defer regulator_disable() will optimize the regulator ON/OFF request
with a proper refcount. It will impact GPU slumber sequence entry
due to wait for CX GDSC regulator_disable(), which indirectly effect
GPU wake up sequence. Hence disable this to turn off the regulator
without any delay.

Change-Id: I0e300df5abfd8f02b1e4258916ace4d0b7f60db9
Signed-off-by: Hareesh Gundu <hareeshg@codeaurora.org>