ARM: dts: msm: correct the routing for micbias on 8937

In tasha based codec, routing for micbias needs correction.
This addresses the issue seen without USB connected, encode
failures on handset.

CRs-Fixed: 961722
Change-Id: Idcae7dfd5a271d811eb9a6680ec44113fab4c5d0
Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>