Support LOCAL_SDK_VERSION := core_current

core_current is a pseudo SDK version which is a core Java API subset of
the Android API. It is expected to be mainly used for external Java
projects which are agnostic to Android; such as junit, guava, etc.

A module built with this SDK version can only link to java modules of
the same kind. It can't depend on modules built with LOCAL_SDK_VERSION
:= current or without LOCAL_SDK_VERSION.

Bug: 72206056
Test: m -j
Change-Id: I34a9696393aa6704fd6684a40ea5b05d3fb46b23
diff --git a/core/soong_app_prebuilt.mk b/core/soong_app_prebuilt.mk
index 65aabff..c553c4c 100644
--- a/core/soong_app_prebuilt.mk
+++ b/core/soong_app_prebuilt.mk
@@ -78,15 +78,15 @@
 ifeq ($(LOCAL_SDK_VERSION),system_current)
 my_link_type := java:system
 my_warn_types := java:platform
-my_allowed_types := java:sdk java:system
+my_allowed_types := java:sdk java:system java:core
 else ifneq ($(LOCAL_SDK_VERSION),)
 my_link_type := java:sdk
 my_warn_types := java:system java:platform
-my_allowed_types := java:sdk
+my_allowed_types := java:sdk java:core
 else
 my_link_type := java:platform
 my_warn_types :=
-my_allowed_types := java:sdk java:system java:platform
+my_allowed_types := java:sdk java:system java:platform java:core
 endif
 
 my_link_deps :=