Inorder: Fix compilation of m5.fast.
Inorder: Fix compilation of m5.fast.

printMemData is only used in DPRINTFs. If those are removed by compiling
m5.fast, that function is unused, gcc generates a warning, that gets turned
into an error, and the build fails. This change surrounds the function
definition with #if TRACING_ON so it only gets compiled in if the DPRINTFs do
to.

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