asoc: wcd938x: reverse datapath_control and connect_port for teardown

swr_slvdev_datapath_control should be called after
wcd938x_tx_connect_port to cleanup disconnected ports.

Change-Id: I53e6e9140ed0be5a0a0704358e3e7f600ab62863
Signed-off-by: Meng Wang <mengw@codeaurora.org>