AArch64: Fix compile error

Fixed to adapt a use of enterBasicBlock() in my last commit (because I
had follow on patches in my repository that change the code).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@265513 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed