clk: starfive: Add JH7100 audio clock driver

Add a driver for the audio clocks on the Starfive JH7100 RISC-V SoC.

Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Link: https://lore.kernel.org/r/20220126173953.1016706-8-kernel@esmil.dk


Signed-off-by: Stephen Boyd <sboyd@kernel.org>