mpc85xx: define reset-delay for WS-AP3825i eth PHY

The WS-AP3825i uses Atheros PHYs which according to the datasheet
require the reset to be asserted for at least 1 ms.

This fixes broken eth1 upon soft-reboot. eth0 is no affected, as the
ifup / ifdown cycle in preinit prevents this issue from happening when
the system is ready.

Reported-by: Tom Herbers <freifunk@tomherbers.de>
Signed-off-by: David Bauer <mail@david-bauer.net>

target/linux/mpc85xx/files/arch/powerpc/boot/dts/ws-ap3825i.dts

@@ -149,12 +149,16 @@
 				interrupts = <3 1 0 0>;
 				reg = <0x5>;
 				reset-gpios = <&gpio0 6 GPIO_ACTIVE_LOW>;
+				reset-assert-us = <10000>;
+				reset-deassert-us = <10000>;
 			};
 
 			phy2: ethernet-phy@2 {
 				interrupts = <1 1 0 0>;
 				reg = <0x6>;
 				reset-gpios = <&gpio0 7 GPIO_ACTIVE_LOW>;
+				reset-assert-us = <10000>;
+				reset-deassert-us = <10000>;
 			};
 		};