ARM: dts: msm: config primary tdm as pcm on auto platforms

Configure primary TDM interface as PCM for supporting
dual BT HFP usecase on automotive sax155 platforms.

Change-Id: I5858aedfd58f53aa8f044b49213c035288363275
Signed-off-by: yangyang <yanya@codeaurora.org>
Signed-off-by: Han Lu <hanlu@codeaurora.org>
Signed-off-by: Derek Chen <chenche@codeaurora.org>