asoc: wcd937x: Add swr port connections for wcd937x

Add interface to read swr port mapping from device
tree and call connect port to swr interface from
wcd937x codec driver.

Change-Id: I82e8d7a8063b725292e0d7ca5e519f279289efe0
Signed-off-by: Ramprasad Katkam <katkam@codeaurora.org>