AdvancedDisplay: 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.

Test: make relevant packages
Bug: 73535841
Change-Id: Id4757bcca09eda716e0a1098d9290928fa87f22d

AdvancedDisplay/Android.mk

@@ -6,6 +6,7 @@ LOCAL_MODULE_TAGS := optional
 LOCAL_SRC_FILES := $(call all-java-files-under, src)
 
 LOCAL_PACKAGE_NAME := AdvancedDisplay
+LOCAL_PRIVATE_PLATFORM_APIS := true
 LOCAL_CERTIFICATE := platform
 
 LOCAL_USE_AAPT2 := true