ARM: kirkwood: Increase NAND chip-delay for DNS-32[05]

The default chip-delay of 25us is a bit too tight for some DNS-320's,
and D-Link seem to specify 30us in their kernels for both devices.
Increase to 35us to make sure the NAND is stable.
Signed-off-by: NJamie Lentin <jm@lentin.co.uk>
Acked-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

arch/arm/boot/dts/kirkwood-dnskw.dtsi

@@ -43,6 +43,7 @@
 
 		nand@3000000 {
 			status = "okay";
+			chip-delay = <35>;
 
 			partition@0 {
 				label = "u-boot";