ARM: dts: msm: Use internal micbias for headset detection on msm8610

Micbias can be pulled up through internal codec resistor or external
on-board pull up. Add micbias as internal for QRD platform.

CRs-fixed: 539445
Change-Id: I630c3487167be3b61bf00d3cc0d65d37ea9880a0
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>