dlx: wlan: Import bcmdhd_4334_mcc from HTC 4.4.2 kernel

This is the wlan driver that is being used by the stock software.

Change-Id: Ief291bbdc658f161f8ec8cd7c24d24e052ade300
dlx: wlan: Add msm_otg_setclk hook used by bcmd_4334_mcc

This looks like some kind of scary crazy hack.  Keeping this
as a separate commit to make it visible in case it causes
problems in the future.

Change-Id: I2154ecb63b71316b22e65308f341dbebfe890aed