V4L/DVB (12847): cx25821: Add README with todo list

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/staging/cx25821/README b/drivers/staging/cx25821/README
new file mode 100644
index 0000000..a9ba50b
--- /dev/null
+++ b/drivers/staging/cx25821/README
@@ -0,0 +1,6 @@
+Todo:
+	- checkpatch.pl cleanups
+	- sparse cleanups
+
+Please send patches to linux-media@vger.kernel.org
+