arm: orion5x: fix orion5x.dtsi gpio parameters

Signed-off-by: Alexander Clouter <alex@digriz.org.uk>
arm: orion5x: add ehci bindings to dtsi

Signed-off-by: Alexander Clouter <alex@digriz.org.uk>
arm: orion5x: enable xor for orion5x platform

Signed-off-by: Alexander Clouter <alex@digriz.org.uk>