Blackfin: cm-bf537u: new board port

The CM-BF537U is similar to the CM-BF537E module, but enough to need its
own board port.

Signed-off-by: Harald Krapfenbauer <Harald.Krapfenbauer@bluetechnix.at>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/MAKEALL b/MAKEALL
index c8a1f37..85f99ef 100755
--- a/MAKEALL
+++ b/MAKEALL
@@ -838,6 +838,7 @@
 	cm-bf527	\
 	cm-bf533	\
 	cm-bf537e	\
+	cm-bf537u	\
 	cm-bf548	\
 	cm-bf561	\
 	ibf-dsp561	\