ARM: amlogic: add support for Odroid-HC4 device

The Odroid-HC4 is a variant of the Odroid-C4 board but with a PCIe-SATA bridge
instead of the USB3 ports.

[narmstrong: add missing CONFIG_SYS_LOAD_ADDR from defconfig]
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
diff --git a/board/amlogic/odroid-n2/MAINTAINERS b/board/amlogic/odroid-n2/MAINTAINERS
index 77f7746..43724e6 100644
--- a/board/amlogic/odroid-n2/MAINTAINERS
+++ b/board/amlogic/odroid-n2/MAINTAINERS
@@ -5,5 +5,6 @@
 F:	board/amlogic/odroid-n2/
 F:	configs/odroid-n2_defconfig
 F:	configs/odroid-c4_defconfig
+F:	configs/odroid-hc4_defconfig
 F:	doc/board/amlogic/odroid-n2.rst
 F:	doc/board/amlogic/odroid-c4.rst