Add frozen: true|false to all AOSP HALs that don't have frozen

This is to prepare for enforcing a requirement of always having frozen
specified.

Test: m
Bug: 366292468

Change-Id: I2f26eb96a3a5a4ac279f665b9866bbfddbd8c496
diff --git a/drm/aidl/Android.bp b/drm/aidl/Android.bp
index afcb603..c42e723 100644
--- a/drm/aidl/Android.bp
+++ b/drm/aidl/Android.bp
@@ -12,6 +12,7 @@
     vendor_available: true,
     srcs: ["android/hardware/drm/*.aidl"],
     stability: "vintf",
+    frozen: true,
     imports: [
         "android.hardware.common-V2",
     ],