Updater: Set LOCAL_PRIVATE_PLATFORM_APIS

This change sets LOCAL_SDK_VERSION for all packages where
this is possible without breaking the build, and
LOCAL_PRIVATE_PLATFORM_APIS := true otherwise.

Setting one of these two will be made required soon, and this
is a change in preparation for that. Not setting LOCAL_SDK_VERSION
makes the app implicitly depend on the bootclasspath, which is
often not required. This change effectively makes depending on
private apis opt-in rather than opt-out.

Bug: 73535841
Change-Id: Iabb0556dc1c80c7fc7f6c76d61d5e441b03cdce0
diff --git a/Android.mk b/Android.mk
index f062386..df2b1f5 100644
--- a/Android.mk
+++ b/Android.mk
@@ -21,6 +21,7 @@
     $(LOCAL_PATH)/res
 
 LOCAL_PACKAGE_NAME := Updater
+LOCAL_PRIVATE_PLATFORM_APIS := true
 LOCAL_PRIVILEGED_MODULE := true
 LOCAL_PROGUARD_FLAG_FILES := proguard.flags