ARM: dts: msm: Set PMIC GPIO3 high for MDM9640 MTP

Set the PMIC GPIO3 high by default for MDM9640 MTP to
enable WLAN and Neutrino power supply on boot up.

Change-Id: I36975cfda8891166ba87b4b64e91438247e39530
Signed-off-by: Gustavo Solaira <gustavos@codeaurora.org>