ASoC:msm: Add routing controls for SVA to work on BG

Enable use of PRI_TDM_TX2 an PRI_TDM_TX_3 ports for SVA
usecases.

Change-Id: I43d0c7df8592d5b093dbce4c54d309374d479ebb
Signed-off-by: Ashish Jain <ashishj@codeaurora.org>
Signed-off-by: Sundara Vinayagam <sundvi@codeaurora.org>