Documentation: arm: marvell: Add Orion codenames and archive homepage

Orion codenames are extracted from menuconfig ARCH_ORION5X and
old Orion homepage with 88F5182/88F5281 was found in web archive.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20220719080807.16729-1-pali@kernel.org


Signed-off-by: Jonathan Corbet <corbet@lwn.net>