Blackfin: add an example showing how to use the gptimers API

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/Documentation/blackfin/Makefile b/Documentation/blackfin/Makefile
new file mode 100644
index 0000000..773dbb1
--- /dev/null
+++ b/Documentation/blackfin/Makefile
@@ -0,0 +1,6 @@
+obj-m := gptimers-example.o
+
+all: modules
+
+modules clean:
+	$(MAKE) -C ../.. SUBDIRS=$(PWD) $@