clk: rockchip: rk3308: Add support for SCLK_RTC32K clock

Add support to get and set the SCLK_RTC32K clock rate.

Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
[jonas@kwiboo.se: Update commit message]
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2 files changed