board: samsung: add initial Espresso7420 board support

Espresso7420 is a development/evaluation board for Exynos7420 SoC. It
includes multiple onboard compoments (EMMC/Codec) and various
interconnects (USB/HDMI).

Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/board/samsung/espresso7420/MAINTAINERS b/board/samsung/espresso7420/MAINTAINERS
new file mode 100644
index 0000000..aaebc4c
--- /dev/null
+++ b/board/samsung/espresso7420/MAINTAINERS
@@ -0,0 +1,5 @@
+ESPRESSO7420 Board
+M:	Thomas Abraham <thomas.ab@samsung.com>
+S:	Maintained
+F:	board/samsung/espresso7420/
+F:	include/configs/espresso7420.h