Use defaults to reference current keymint version

The KeyMint HAL will soon be updated for a new version. To make this
process easier, add a cc_defaults and rust_defaults that references
the "current" version, and use this elsewhere. This should hopefully
mean that a future version bump only needs to happen in the defaults.

Test: TreeHugger
Change-Id: If7dd0c5778acb92177e16fd4fb4a04dcb837ad06
diff --git a/security/keymint/support/Android.bp b/security/keymint/support/Android.bp
index e162934..36969bb 100644
--- a/security/keymint/support/Android.bp
+++ b/security/keymint/support/Android.bp
@@ -40,8 +40,10 @@
     export_include_dirs: [
         "include",
     ],
+    defaults: [
+        "keymint_use_latest_hal_aidl_ndk_shared",
+    ],
     shared_libs: [
-        "android.hardware.security.keymint-V1-ndk",
         "libbase",
         "libcrypto",
         "libutils",