ASoc: wcd934x: correct High-Z mode for dmic pins

Update the DMIC CLK and DATA registers to use the correct
settings required for DMIC High-Z on wcd934x. Registers
should be set to 0x6 for Slimbus mode and 0xD for I2C mode.

CRs-Fixed: 1059712
Change-Id: Ibe8ca2e40ee56708e8c84c174d12ce5841e6b1ce
Signed-off-by: Meng Wang <mwang@codeaurora.org>