defconfig: apq8084: Enable QPNP_USB_DETECT

Enable QPNP USB Detect driver which is used to detect USB
cable connect/disconnect through VBUS detection. This is used
on platforms where SMB charger is not used.

Change-Id: I1b706e4749c35b91ca655eb5481480e54e91d726
Signed-off-by: Jack Pham <jackp@codeaurora.org>