ARM: dts: msm: Disable defer regulator_disable() for sdm670 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: Ib2d151f97190c626c75049d6d0e8ad4df44ee4cb
Signed-off-by: Hareesh Gundu <hareeshg@codeaurora.org>