base: Add XOR and modulo operator to ChannelAddr

base: Add XOR and modulo operator to ChannelAddr

Channel address class did not offer bitwise
XOR and modulo operation. These two functions
where now added to the ChannelAddr class.

Change-Id: I02a5e49e9700cc5283415c921a25989a130e5d07
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Ciro Santilli <ciro.santilli@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/39235
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>