[app][mdebug] update protocol for JTAG transactions
[app][mdebug] update protocol for JTAG transactions

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