rockchip: rk3308: Add support for ROC-RK3308-CC board

ROC-RK3308-CC is a rk3308 based board designed by
Firelfy, with eMMC and 256MB DDR3 and RTL8188 Wifi
on board.

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/board/firefly/firefly-rk3308/MAINTAINERS b/board/firefly/firefly-rk3308/MAINTAINERS
new file mode 100644
index 0000000..1990797
--- /dev/null
+++ b/board/firefly/firefly-rk3308/MAINTAINERS
@@ -0,0 +1,5 @@
+ROC-RK3308-CC
+M:      Andy Yan <andy.yan@rock-chips.com>
+S:      Maintained
+F:      board/firefly/firefly-rk3308/roc_cc_rk3308.c
+F:      configs/roc-cc-rk3308_defconfig