arm: Assume we have a kernel that supports pci devices
arm: Assume we have a kernel that supports pci devices

Change the default kernel for AArch64 and since it supports PCI devices
remove the hack that made it use CF. Unfortunately, there isn't really
a half-way here and we need to switch. Current users will get an error
message that the kernel isn't found and hopefully go download a new
kernel that supports PCI.

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