AArch64/test: Add check for function name to machine-outliner-bad-adrp.mir

Summary:
This test was failing in one of our setups because the generated ModuleID
had the full path of the test file and that path contained the string
BL.

Reviewers: t.p.northover, jpaquette, paquette

Reviewed By: paquette

Subscribers: javed.absar, kristof.beyls, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D58217

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@354497 91177308-0d34-0410-b5e6-96231b3b80d8

Author: tstellar

test/CodeGen/AArch64/machine-outliner-bad-adrp.mir

@@ -10,6 +10,7 @@
 ...
 ---
 name:            foo
+# CHECK-LABEL: name: foo
 tracksRegLiveness: true
 constants:       
   - id:              0