Add sdmmc2 pinmux support inorder to use SDMMC2 controller on t210b01 platforms. Bug 200360711 Change-Id: Ie2d3a20d10325d42dc5dbf601c9da747ff0caa66 Signed-off-by: Bibhay Ranjan <bibhayr@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1593367 Reviewed-on: https://git-master.nvidia.com/r/1648549 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: Bitan Biswas <bbiswas@nvidia.com> Reviewed-by: Pavan Kunapuli <pkunapuli@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Ashutosh Jha <ajha@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>