Add LOCAL_LICENSE_KINDS to system/core

Added SPDX-license-identifier-Apache-2.0 to:
  fastboot/fuzzer/Android.bp
  fs_mgr/fuzz/Android.bp

Bug: 68860345
Bug: 151177513
Bug: 151953481

Test: m all

Change-Id: I3bb21e1af846d175a345c2a3a632dc47ecdd62de
diff --git a/fastboot/fuzzer/Android.bp b/fastboot/fuzzer/Android.bp
index fcd3bd6..1b59e4a 100644
--- a/fastboot/fuzzer/Android.bp
+++ b/fastboot/fuzzer/Android.bp
@@ -15,6 +15,11 @@
  *
  */
 
+package {
+    // See: http://go/android-license-faq
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
 cc_fuzz {
     name: "fastboot_fuzzer",
     host_supported: true,