ARM: dts: Specify the NAND ECC scheme explicitly on Armada 375 DB board

The factory bootloader on A375-DB boards expect the ECC strength to be
4 bits over 512 bytes. Hence, we need to specify this in the devicetree,
to prevent the kernel from assuming any different ECC scheme.

Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Link: https://lkml.kernel.org/r/1400941030-2123-2-git-send-email-ezequiel.garcia@free-electrons.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

arch/arm/boot/dts/armada-375-db.dts

@@ -91,6 +91,8 @@
 				marvell,nand-keep-config;
 				marvell,nand-enable-arbiter;
 				nand-on-flash-bbt;
+				nand-ecc-strength = <4>;
+				nand-ecc-step-size = <512>;
 
 				partition@0 {
 					label = "U-Boot";