ASoC: msm8x16-wcd: fix unauthorized access of clocks from audio driver

As per the access control policies and our clock plan the ULT clocks
which are now part of global clock controller are owned by MSS only.
Hence we need to make sure that clocks are requested through AFE
only and not requested from the audio driver.
Fix by removing the clock request in the init function of codec.

CRs-Fixed: 642115
Change-Id: I60d7cfbba3f7e1a737b14c4546a41488213c5750
Signed-off-by: Aviral Gupta <aviralg@codeaurora.org>