cpu: Added the Multiperspective Perceptron Predictor with TAGE (8KB and 64KB)

Described by the following article:
Jiménez, D. "Multiperspective perceptron predictor with TAGE."
Championship Branch Prediction (CBP-5) (2016).

Change-Id: Ica3c121a4c94657d9015573085040e8a1984b069
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/19188
Tested-by: kokoro <noreply+kokoro@google.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Ilias Vougioukas <ilias.vougioukas@arm.com>

cpu: Added 8KB and 64KB TAGE-SC-L branch predictor

The original paper of the branch predictor can be found here:
http://www.jilp.org/cbp2016/paper/AndreSeznecLimited.pdf

Change-Id: I684863752407685adaacedebb699205c3559c528
Reviewed-on: https://gem5-review.googlesource.com/c/14855
Reviewed-by: Sudhanshu Jha <sudhanshu.jha@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>