[LSC] Add LOCAL_LICENSE_KINDS to external/arm-optimized-routines

Added SPDX-license-identifier-MIT to:
  Android.bp

Bug: 68860345
Bug: 151177513
Bug: 151953481

Test: m all

Exempt-From-Owner-Approval: janitorial work
Change-Id: Id4d7093b8a781d32de4ef0e931ac99d91cfd775b
diff --git a/Android.bp b/Android.bp
index 78f1fdc..0fbd92f 100755
--- a/Android.bp
+++ b/Android.bp
@@ -1,3 +1,20 @@
+package {
+    default_applicable_licenses: ["external_arm-optimized-routines_license"],
+}
+
+// Added automatically by a large-scale-change
+// See: http://go/android-license-faq
+license {
+    name: "external_arm-optimized-routines_license",
+    visibility: [":__subpackages__"],
+    license_kinds: [
+        "SPDX-license-identifier-MIT",
+    ],
+    license_text: [
+        "LICENSE",
+    ],
+}
+
 cc_defaults {
     name: "arm-optimized-routines-defaults",
     host_supported: true,