ARM: dts: msm: vote S3E to avoid XO shutdown failure

On sdxprairie, there is a PBS vote on S3E, that will keep S3E always
high during active. While, this vote will be removed during
XO shutdown, and cause WLAN malfunction in XO shutdown scenario.

Vote this regulator in WLAN host explicitly to avoid it.

Change-Id: If65aca42f4642acfe56a9f26e37fa0caad511eb7
CRs-Fixed: 2533763
Signed-off-by: Lin Bai <lbai@codeaurora.org>