MIPS: add BMIPS Huawei HG556a board

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/board/huawei/hg556a/Kconfig b/board/huawei/hg556a/Kconfig
new file mode 100644
index 0000000..88622d0
--- /dev/null
+++ b/board/huawei/hg556a/Kconfig
@@ -0,0 +1,12 @@
+if BOARD_HUAWEI_HG556A
+
+config SYS_BOARD
+	default "hg556a"
+
+config SYS_VENDOR
+	default "huawei"
+
+config SYS_CONFIG_NAME
+	default "huawei_hg556a"
+
+endif