CHROMIUM: arm64: dts: qcom: qcs404: Add wifi regulator proxy vote

Add wifi regulators in qcs404 dt node for proxy vote. Proxy votes are
required for handling driver recovery scenarios to prevent
un-clocked register access during driver recovery.

BUG=b:137525452
TEST=None

Change-Id: Iffbbe2a765c47bf014662da2ca2c126cce9c5a28
Signed-off-by: Govind Singh <govinds@codeaurora.org>
Signed-off-by: Vamsi Singamsetty <vamssi@codeaurora.org>