1. Add rv32 binary files into asmtests 2. Support Riscv CPU with 32 bits register to simple_binary_run.py Change-Id: I5cc4c2eeb7654a4acc2d167eb76d8b6522e65dd9 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/65533 Reviewed-by: Yu-hsin Wang <yuhsingw@google.com> Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu> Tested-by: kokoro <noreply+kokoro@google.com> Maintainer: Bobby Bruce <bbruce@ucdavis.edu>