Add support for the suniv architecture, which is newer ARM9 SoCs by Allwinner. The design of it seems to be a mixture of sun3i, sun4i and sun6i. Signed-off-by: Icenowy Zheng <icenowy@aosc.io> Signed-off-by: Jesse Taube <Mr.Bossman075@gmail.com> Reviewed-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: Andre Przywara <andre.przywara@arm.com>