resources: Add files to make 6.8.12 riscv kernel and gem5 bridge driver#67

Harshil2107 wants to merge 3 commits intogem5:stablegem5/gem5-resources:stablefrom

Harshil2107:make-riscv-kernelHarshil2107/gem5-resources-repo:make-riscv-kernelCopy head branch name to clipboard