RTC HYM8563 used in the ARM64 Rockchip SoC's SDIO power
sequence enablement.

Enable it as module.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Link: https://lore.kernel.org/r/20201023181814.220974-1-jagan@amarulasolutions.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>