riscv: dts: sophgo: Add clk node and sdhci node

Add clk node and sdhci node for cv18xx SoCs according to patches from Linux
kernel.

clk: https://lore.kernel.org/all/IA1PR20MB4953F9AD6792013B54636F05BB4F2@IA1PR20MB4953.namprd20.prod.outlook.com/
sdhci: https://lore.kernel.org/all/20240217144826.3944-1-jszhang@kernel.org/

Signed-off-by: Kongyang Liu <seashell11234455@gmail.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
3 files changed