mips: bmips: add NeufBox 4 (Sercomm) board

This serves as an example for bcm6358-leds.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/board/sfr/nb4_ser/MAINTAINERS b/board/sfr/nb4_ser/MAINTAINERS
new file mode 100644
index 0000000..bf80267
--- /dev/null
+++ b/board/sfr/nb4_ser/MAINTAINERS
@@ -0,0 +1,6 @@
+SFR NEUFBOX 4 SERCOMM BOARD
+M:	Álvaro Fernández Rojas <noltari@gmail.com>
+S:	Maintained
+F:	board/sfr/nb4_ser/
+F:	include/configs/sfr_nb4_ser.h
+F:	configs/sfr_nb4-ser_ram_defconfig