clk: renesas: rcar-gen3: Remove cpg_quirks access when registering SD clock

We want to reuse SD clock handling for other SoCs and, thus, need to
generalize it. So, don't access cpg_quirks in that realm.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20201227174202.40834-3-wsa+renesas@sang-engineering.com


Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>