ARM: dts: msm: Add the external capacitor setting for msm8610

Micbias used for audio recording can have on-board external bypass
capacitor. Add these setting for the CDP and MTP platforms for 8610
since these platforms have a external bypass capacitor on the micbias.

CRs-fixed: 539445
Change-Id: Icfd38e853e6e97f37cc1ef8e6aa65612d83b18db
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>