arch: Promote outOfBytes/needMoreBytes to the InstDecoder class.

Change-Id: Ie8f31e424081f002e3d74edd1685b4a977c545c3
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/52073
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
Maintainer: Gabe Black <gabe.black@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
8 files changed