reset: Add Nuvoton ma35d1 reset driver support

This driver supports individual IP reset for the MA35D1. The reset
control registers are a subset of the system control registers.

Signed-off-by: Jacky Huang <ychuang3@nuvoton.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>