Add support for cortex-a72

Bug: 113346253
Test: lunch cheets_arm64-eng; m
Change-Id: I02dd1cfe75f97767eac7424d472ff643987c276b
diff --git a/cc/config/arm64_device.go b/cc/config/arm64_device.go
index 6fdd524..12e9114 100644
--- a/cc/config/arm64_device.go
+++ b/cc/config/arm64_device.go
@@ -86,6 +86,7 @@
 		"armv8_2a",
 		"cortex-a53",
 		"cortex-a55",
+		"cortex-a72",
 		"cortex-a73",
 		"cortex-a75",
 		"kryo",
@@ -146,6 +147,7 @@
 		"":           "",
 		"cortex-a53": "${config.Arm64CortexA53Cflags}",
 		"cortex-a55": "${config.Arm64CortexA55Cflags}",
+		"cortex-a72": "${config.Arm64CortexA53Cflags}",
 		"cortex-a73": "${config.Arm64CortexA53Cflags}",
 		"cortex-a75": "${config.Arm64CortexA55Cflags}",
 		"kryo":       "${config.Arm64KryoCflags}",
@@ -162,6 +164,7 @@
 		"":           "",
 		"cortex-a53": "${config.Arm64ClangCortexA53Cflags}",
 		"cortex-a55": "${config.Arm64ClangCortexA55Cflags}",
+		"cortex-a72": "${config.Arm64ClangCortexA53Cflags}",
 		"cortex-a73": "${config.Arm64ClangCortexA53Cflags}",
 		"cortex-a75": "${config.Arm64ClangCortexA55Cflags}",
 		"kryo":       "${config.Arm64ClangKryoCflags}",
@@ -257,7 +260,7 @@
 
 	var extraLdflags string
 	switch arch.CpuVariant {
-	case "cortex-a53", "cortex-a73", "kryo", "exynos-m1", "exynos-m2",
+	case "cortex-a53", "cortex-a72", "cortex-a73", "kryo", "exynos-m1", "exynos-m2",
 		// This variant might not need the workaround but leave it
 		// in the list since it has had the workaround on before.
 		"denver64":