uart works in linux
uart works in linux

dev/tsunami_uart.cc:
    added code make it work with linux's uart code.

--HG--
extra : convert_revision : 893a3439dac16cfe68dbd50daa475be04d9ee3de

markoshorro/gem5,rallylee/gem5,sobercoder/gem5,sobercoder/gem5,joerocklin/gem5,rjschof/gem5,joerocklin/gem5,yb-kim/gemV,joerocklin/gem5,aclifton/cpeg853-gem5,powerjg/gem5-ci-test,sobercoder/gem5,samueldotj/TeeRISC-Simulator,markoshorro/gem5,samueldotj/TeeRISC-Simulator,powerjg/gem5-ci-test,samueldotj/TeeRISC-Simulator,austinharris/gem5-riscv,aclifton/cpeg853-gem5,Weil0ng/gem5,qizenguf/MLC-STT,cancro7/gem5,markoshorro/gem5,sobercoder/gem5,joerocklin/gem5,TUD-OS/gem5-dtu,joerocklin/gem5,Weil0ng/gem5,qizenguf/MLC-STT,yb-kim/gemV,Weil0ng/gem5,markoshorro/gem5,yb-kim/gemV,kaiyuanl/gem5,sobercoder/gem5,powerjg/gem5-ci-test,qizenguf/MLC-STT,SanchayanMaity/gem5,qizenguf/MLC-STT,markoshorro/gem5,kaiyuanl/gem5,TUD-OS/gem5-dtu,zlfben/gem5,powerjg/gem5-ci-test,kaiyuanl/gem5,HwisooSo/gemV-update,briancoutinho0905/2dsampling,aclifton/cpeg853-gem5,yb-kim/gemV,joerocklin/gem5,rjschof/gem5,SanchayanMaity/gem5,gedare/gem5,markoshorro/gem5,yb-kim/gemV,cancro7/gem5,briancoutinho0905/2dsampling,cancro7/gem5,gem5/gem5,SanchayanMaity/gem5,HwisooSo/gemV-update,briancoutinho0905/2dsampling,aclifton/cpeg853-gem5,gem5/gem5,rallylee/gem5,kaiyuanl/gem5,sobercoder/gem5,TUD-OS/gem5-dtu,zlfben/gem5,KuroeKurose/gem5,Weil0ng/gem5,HwisooSo/gemV-update,KuroeKurose/gem5,KuroeKurose/gem5,joerocklin/gem5,yb-kim/gemV,markoshorro/gem5,rallylee/gem5,rallylee/gem5,KuroeKurose/gem5,rallylee/gem5,briancoutinho0905/2dsampling,powerjg/gem5-ci-test,TUD-OS/gem5-dtu,austinharris/gem5-riscv,zlfben/gem5,rjschof/gem5,rallylee/gem5,cancro7/gem5,rjschof/gem5,samueldotj/TeeRISC-Simulator,briancoutinho0905/2dsampling,powerjg/gem5-ci-test,gedare/gem5,rjschof/gem5,qizenguf/MLC-STT,briancoutinho0905/2dsampling,cancro7/gem5,gem5/gem5,zlfben/gem5,Weil0ng/gem5,KuroeKurose/gem5,qizenguf/MLC-STT,samueldotj/TeeRISC-Simulator,samueldotj/TeeRISC-Simulator,sobercoder/gem5,TUD-OS/gem5-dtu,Weil0ng/gem5,austinharris/gem5-riscv,KuroeKurose/gem5,SanchayanMaity/gem5,zlfben/gem5,zlfben/gem5,austinharris/gem5-riscv,rjschof/gem5,kaiyuanl/gem5,aclifton/cpeg853-gem5,HwisooSo/gemV-update,Weil0ng/gem5,kaiyuanl/gem5,TUD-OS/gem5-dtu,gedare/gem5,zlfben/gem5,yb-kim/gemV,kaiyuanl/gem5,SanchayanMaity/gem5,cancro7/gem5,aclifton/cpeg853-gem5,briancoutinho0905/2dsampling,SanchayanMaity/gem5,rjschof/gem5,austinharris/gem5-riscv,gem5/gem5,TUD-OS/gem5-dtu,gem5/gem5,gem5/gem5,powerjg/gem5-ci-test,HwisooSo/gemV-update,gedare/gem5,HwisooSo/gemV-update,aclifton/cpeg853-gem5,SanchayanMaity/gem5,cancro7/gem5,gem5/gem5,samueldotj/TeeRISC-Simulator,gedare/gem5,joerocklin/gem5,HwisooSo/gemV-update,KuroeKurose/gem5,rallylee/gem5,qizenguf/MLC-STT,yb-kim/gemV,gedare/gem5,austinharris/gem5-riscv,gedare/gem5,austinharris/gem5-riscv