[AArch64] check for INLINEASM_BR along w/ INLINEASM

Summary:
It looks like since INLINEASM_BR was created off of INLINEASM, a few
checks for INLINEASM needed to be updated to check for either case.

pr/41999

Reviewers: t.p.northover, peter.smith

Reviewed By: peter.smith

Subscribers: craig.topper, javed.absar, kristof.beyls, hiraditya, llvm-commits, peter.smith, srhines

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D62402

llvm-svn: 361661