[ARM] Create MQQPR and MQQQQPR register classes

[ARM] Create MQQPR and MQQQQPR register classes

Similar to the MQPR register class as the MVE equivalent to QPR, this
adds MQQPR and MQQQQPR register classes for the MVE equivalents of QQPR
and QQQQPR registers. The MVE MQPR seemed have worked out quite well,
and adding MQQPR and MQQQQPR allows us to a little more accurately
specify the number of registers, calculating register pressure limits a
little better.

Differential Revision: https://reviews.llvm.org/D107463