rtc: s3c: Put 'const' just after 'static' keyword for data

Convention is to define static data as 'static const ...', not 'static
... const' because of readability, even if the code is functionally
equal.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250707092200.48862-2-krzysztof.kozlowski@linaro.org


Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>