[GlobalISel][ARM] Adding HPR and QPR regclasses to FPRB regbank

Also bringing ARMRegisterBankInfo::getRegBankFromRegClass
implementation up to speed with the *.td-definition.

Reviewed By: qcolombet

Differential Revision: https://reviews.llvm.org/D43982

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@333056 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed