Rename A64 port to ARM64 port

src/arm64/decoder-arm64-inl.h

Index: src/arm64/decoder-arm64-inl.h
diff --git a/src/a64/decoder-a64-inl.h b/src/arm64/decoder-arm64-inl.h
similarity index 99%
rename from src/a64/decoder-a64-inl.h
rename to src/arm64/decoder-arm64-inl.h
index 0cc6e8e9360f1423cd9cf27fc5cedb69ee60024d..94009c704d7ad9bcfade47c37bafbec3399aba18 100644
--- a/src/a64/decoder-a64-inl.h
+++ b/src/arm64/decoder-arm64-inl.h
@@ -25,10 +25,10 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-#ifndef V8_A64_DECODER_A64_INL_H_
-#define V8_A64_DECODER_A64_INL_H_
+#ifndef V8_ARM64_DECODER_ARM64_INL_H_
+#define V8_ARM64_DECODER_ARM64_INL_H_
 
-#include "a64/decoder-a64.h"
+#include "arm64/decoder-arm64.h"
 #include "globals.h"
 #include "utils.h"
 
@@ -668,4 +668,4 @@ void Decoder<V>::DecodeAdvSIMDDataProcessing(Instruction* instr) {
 
 } }  // namespace v8::internal
 
-#endif  // V8_A64_DECODER_A64_INL_H_
+#endif  // V8_ARM64_DECODER_ARM64_INL_H_