arch-riscv: fix inUserMode

The original inUserMode() simply returns true. However, it should
check whether the processor's current privilege level is PRV_U.

Change-Id: Iba74ccc6ff459e7d8c421ae9fe004c6c09920763
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/53184
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Ayaz Akram <yazakram@ucdavis.edu>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2 files changed