feat(allwinner): apx803: add aldo1 regulator

Notice that aldo1 is typically useful for the Olimex A64 board, where
it powers the PE bank through the vcc-pe line.
Without it, it is not possible to light the user led on PE17, for
instance.

Change-Id: I70588bc977b884b22df87f1b075549cb8925925a
Signed-off-by: Thierry Bultel <thierry.bultel@linatsea.fr>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>