mogami/zeus: Support proprietary chargers.

Non-standard chargers are allowed to charge up to 500mA.

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>
defconfigs: Disable SEMC alien charger implementation

Let's see how charger behaves with CAF alien charger code

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>