frameworks/native/docs: add doxygen configuration

Change-Id: I7803d9beceac46488869e4874f6f5f7a7925a796
diff --git a/docs/Makefile b/docs/Makefile
new file mode 100644
index 0000000..356b2ce
--- /dev/null
+++ b/docs/Makefile
@@ -0,0 +1,14 @@
+HEADERS := $(wildcard ../include/android/*.h)
+
+all: html jd
+
+html: $(HEADERS) Doxyfile
+	mkdir -p html
+	doxygen
+
+jd: $(HEADERS) Doxyfile header.jd
+	mkdir -p jd
+	HTML_HEADER=header.jd HTML_OUTPUT=jd doxygen
+	for file in jd/*.html; do mv "$${file}" "$${file/\.html/\.jd}"; done
+	rm -f jd/index.jd
+