cpu: fix a switching issue with the o3 cpu.
cpu: fix a switching issue with the o3 cpu.

This change fixes the switcheroo test that broke earlier this month. The code
that was checking for the pipeline being blocked wasn't checking for a pending
translation, only for a icache access.

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