MIPS: add board support for Arcadyan ARV7519RW22-LT-A

Signed-off-by: Esteban Benito <estebanjbs@gmail.com>
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
MIPS: add board support for Arcadyan ARV7510PW22

Signed-off-by: lvaro Fernández Rojas <noltari@gmail.com>
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Makefile: prepare u-boot-lantiq-v2014.01-openwrt2

Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>