Update REQUIRES line in 4 tests that attempt to use arm64 which should be aarch64 not arm.

GitOrigin-RevId: 691c3d59484f6d7f03c68db3b9c5b00c30fe8420
diff --git a/test/MachO/arm64-reloc-got-load.s b/test/MachO/arm64-reloc-got-load.s
index fb52565..d627c8a 100644
--- a/test/MachO/arm64-reloc-got-load.s
+++ b/test/MachO/arm64-reloc-got-load.s
@@ -1,4 +1,4 @@
-# REQUIRES: arm
+# REQUIRES: aarch64
 
 # RUN: rm -rf %t; split-file %s %t
 # RUN: llvm-mc -filetype=obj -triple=arm64-apple-darwin %t/main.s -o %t/main.o
diff --git a/test/MachO/arm64-reloc-pointer-to-got.s b/test/MachO/arm64-reloc-pointer-to-got.s
index 5bf98a2..65ad802 100644
--- a/test/MachO/arm64-reloc-pointer-to-got.s
+++ b/test/MachO/arm64-reloc-pointer-to-got.s
@@ -1,4 +1,4 @@
-# REQUIRES: arm
+# REQUIRES: aarch64
 
 # RUN: llvm-mc -filetype=obj -triple=arm64-apple-darwin %s -o %t.o
 # RUN: %lld -lSystem -arch arm64 -o %t %t.o
diff --git a/test/MachO/arm64-reloc-tlv-load.s b/test/MachO/arm64-reloc-tlv-load.s
index 1b911a6..3cfd311 100644
--- a/test/MachO/arm64-reloc-tlv-load.s
+++ b/test/MachO/arm64-reloc-tlv-load.s
@@ -1,4 +1,4 @@
-# REQUIRES: arm
+# REQUIRES: aarch64
 
 # RUN: rm -rf %t; split-file %s %t
 # RUN: llvm-mc -filetype=obj -triple=arm64-apple-darwin %t/main.s -o %t/main.o
diff --git a/test/MachO/header.s b/test/MachO/header.s
index c96682f..405fabc 100644
--- a/test/MachO/header.s
+++ b/test/MachO/header.s
@@ -1,4 +1,4 @@
-# REQUIRES: x86, arm
+# REQUIRES: x86, aarch64
 # RUN: rm -rf %t && mkdir -p %t
 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %s -o %t/x86_64-test.o
 # RUN: llvm-mc -filetype=obj -triple=arm64-apple-darwin %s -o %t/arm64-test.o