ARM: dts: msm: Specify pinctrl configuration for qnovo on pm8150b

External FET for Qnovo peripheral on PM8150B is controlled via
GPIO8. Add the required configuration for it so that it can be
configured properly upon charger removal.

Change-Id: I6bf88c9c0ab3a8a39c0606b7ccfde0fa586cef52
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>