[AVR] Fix the testsuite after '%' changed to '$' in MIR

llvm-svn: 324583
diff --git a/llvm/test/CodeGen/AVR/pseudo/LDWRdPtr-same-src-dst.mir b/llvm/test/CodeGen/AVR/pseudo/LDWRdPtr-same-src-dst.mir
index 82f1a9a..4fc97f63 100644
--- a/llvm/test/CodeGen/AVR/pseudo/LDWRdPtr-same-src-dst.mir
+++ b/llvm/test/CodeGen/AVR/pseudo/LDWRdPtr-same-src-dst.mir
@@ -24,6 +24,6 @@
     ; CHECK-NEXT: mov r31, [[SCRATCH]]
     ; CHECK-NEXT: pop r30
 
-    early-clobber %r31r30 = LDWRdPtr undef %r31r30
+    early-clobber $r31r30 = LDWRdPtr undef $r31r30
 ...