clk: samsung: Fix kernel-doc comments

Fix some issues found in kernel-doc comments in Samsung CCF framework.
It makes scripts/kernel-doc happy, which can be checked with:

    $ find drivers/clk/samsung/ -name '*.[ch]' -exec \
      scripts/kernel-doc -v -none {} \;

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Fixes: ddeac8d9 ("clk: samsung: add infrastructure to register cpu clocks")
Fixes: 721c42a3 ("clk: samsung: add common clock framework helper functions for Samsung platforms")
Fixes: 3ff6e0d8 ("clk: samsung: Add support to register rate_table for samsung plls")
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20231109190925.2066-1-semen.protsenko@linaro.org


Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>