ASoc: wcd9335: correct native playback widget on msmcobalt

On msm-4.4, conditional paths are not supported for
supply widgets. Using SND_SOC_DAPM_MUX instead of
using Switches to connect to the native supply.

CRs-Fixed: 1066167
Change-Id: If015dbad0e168e41f1c8c86b502d4cf5fb592045
Signed-off-by: Meng Wang <mwang@codeaurora.org>