qcom: genoa_extcon_notifier: Add genoa extcon notifier driver

Add support for genoa extcon notifier driver which helps to
provide extcon notification to internal drivers based on vbus
detect on genoa msm VBUS_DETECT gpio GPIO19, which is connected
to VBUS of USB type C connector.

The  driver handles interrupt on GPIO 19 and register extcon
device for USB and USB_HOST such that dwc3-msm.c can register
VBUS/ID notifier callbacks for cable connection status.

This driver in addition drives GPIOS based on connect D+/D- lines
to Genoa or USB type C connector.

Change-Id: I700f7d98916b96e702bff7937b4600da4a55c331
Signed-off-by: AKASH KUMAR <quic_akakum@quicinc.com>