arch-riscv: Support RV32 to remote gdb

support rv32 cpu, fpu, csr registers to remote gdb.

Change-Id: Ib821a35ff2e95f6f47569b1f4cb35cd98fcca77d
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/66131
Tested-by: kokoro <noreply+kokoro@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
Reviewed-by: Gabe Black <gabeblack@google.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
7 files changed