RTC: RK808: add RTC driver for RK808

RTC: RK808: add RTC driver for RK808

This is the initial version of the RK808 PMIC.  This is a power management
IC for multimedia products.  It provides regulators that are able to
supply power to processor cores and other components.  The chip provides
other modules including RTC, Clockout.

Add RTC driver for supporting RTC device present inside RK808 PMIC.

[[email protected]: make tm_def static]
Signed-off-by: Chris Zhong <[email protected]>
Signed-off-by: Zhang Qing <[email protected]>
Tested-by: Heiko Stuebner <[email protected]>
Reviewed-by: Doug Anderson <[email protected]>
Tested-by: Doug Anderson <[email protected]>
Cc: Pawel Moll <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Ian Campbell <[email protected]>
Cc: Samuel Ortiz <[email protected]> says:
Cc: Alessandro Zummo <[email protected]>
Cc: Olof Johansson <[email protected]>
Cc: Dmitry Torokhov <[email protected]>
Cc: Javier Martinez Canillas <[email protected]>
Cc: Kever Yang <[email protected]>
Cc: Li Zhong <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>