[platform][stellaris] fix usbc driver for new changes in api
[platform][stellaris] fix usbc driver for new changes in api

hollanderic/lkstuff,sndnvaps/lk,littlekernel/lk,minglun-tsai/lk,littlekernel/lk,ErikCorryGoogle/lk,ErikCorryGoogle/lk,hollanderic/lkstuff,sndnvaps/lk,ErikCorryGoogle/lk,minglun-tsai/lk,travisg/lk,littlekernel/lk,sndnvaps/lk,sndnvaps/lk,sndnvaps/lk,travisg/lk,littlekernel/lk,hollanderic/lkstuff,travisg/lk,ErikCorryGoogle/lk,hollanderic/lkstuff,minglun-tsai/lk,travisg/lk,minglun-tsai/lk