clk: samsung: clk-pll: Add support for pll_531x

pll531x PLL is used in Exynos Auto v920 SoC for shared pll.
pll531x: Integer/fractional PLL with mid frequency FVCO (800 to 3120 MHz)

PLL531x
FOUT = (MDIV x FIN)/(PDIV x 2^SDIV) for integer PLL
FOUT = (MDIV + F/2^32-F[31]) x FIN/(PDIV x 2^SDIV) for fractional PLL

Signed-off-by: Sunyeal Hong <sunyeal.hong@samsung.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Link: https://lore.kernel.org/r/20240821232652.1077701-4-sunyeal.hong@samsung.com


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