Fix the overload which prints ExtMachInst in X86.
Fix the overload which prints ExtMachInst in X86.

--HG--
extra : convert_revision : 2ef8ee71999f36b09270ba9526c2846beda65051

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