clk: sophgo: Add PLL clock controller support for SG2044 SoC

clk: sophgo: Add PLL clock controller support for SG2044 SoC

Add PLL clock driver and clock definition for SG2044 SoC.

Link: https://lore.kernel.org/r/20250418020325.421257-5-inochiama@gmail.com
Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
Signed-off-by: Chen Wang <wangchen20@iscas.ac.cn>