mem: Add missing flag test functions to Request

Change-Id: I800c45c855332a2dd1ec5f31b135db62181e5204
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/38455
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
1 file changed