[PATCH v3 8/9] clk: microchip: mpfs: add RTCREF clock control

[Stephen Boyd]

Quoting Conor Dooley (2022-04-13 00:58:35)
> The reference clock used by the PolarFire SoC's onboard rtc was missing
> from the clock driver. Add this clock at the "config" clock level, with
> the external reference clock as its parent.
> 
> Fixes: 635e5e73370e ("clk: microchip: Add driver for Microchip PolarFire SoC")
> Reviewed-by: Daire McNamara <daire.mcnamara at microchip.com>
> Signed-off-by: Conor Dooley <conor.dooley at microchip.com>
> ---

Applied to clk-fixes