Revert "max98090: disable capture"

This reverts commit 49cae53adf33240dff7b47d5f5072b01d2ed9651.
samsung-i2s: never disable CDCLK

As explained here:
http://marc.info/?l=linux-arm-kernel&m=141158123805013&w=2

The CDCLK handling is a mess and pulseaudio makes the logic go wrong:
we turn off CDCLK and never turn it on again.

For now, as a workaround, never disable CDCLK.