Put libcore generated source files into LOCAL_INTERMEDIATES_SOURCES

LOCAL_SRC_FILES is expected to be a list of files relative to the
Android.mk files.  If OUT_DIR is absolute then adding generated
files to the list produces bad paths when $(LOCAL_PATH)/ is prepended
to it.  Put libcore's generated sources into
LOCAL_INTERMEDIATE_SOURCES instead.

Bug: 64930165
Bug: 68375156
Test: m checkbuild
Change-Id: I4b36fd192570ea0cd52d8537a16c078c726d97fd
diff --git a/Android.mk b/Android.mk
index 2b12416..14819d9 100644
--- a/Android.mk
+++ b/Android.mk
@@ -942,7 +942,8 @@
 framework_docs_LOCAL_INTERMEDIATE_SOURCES := \
 	$(framework_res_source_path)/android/R.java \
 	$(framework_res_source_path)/android/Manifest.java \
-	$(framework_res_source_path)/com/android/internal/R.java
+	$(framework_res_source_path)/com/android/internal/R.java \
+	$(patsubst $(TARGET_OUT_COMMON_INTERMEDIATES)/%,%,$(libcore_to_document_generated))
 
 framework_docs_LOCAL_API_CHECK_JAVA_LIBRARIES := \
 	core-oj \
@@ -1014,7 +1015,7 @@
 
 framework_docs_LOCAL_ADDITIONAL_DEPENDENCIES := \
     frameworks/base/docs/knowntags.txt \
-    libcore/Docs.mk
+    $(libcore_to_document_generated)
 
 samples_dir := development/samples/browseable