clk: nuvoton: Convert to devm_platform_ioremap_resource()

Use devm_platform_ioremap_resource() to simplify code.

Signed-off-by: Yangtao Li <frank.li@vivo.com>
Link: https://lore.kernel.org/r/20230705065313.67043-12-frank.li@vivo.com


Acked-by: Jacky Huang <ychuang3@nuvoton.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>