Function parse_cmdline 

pub unsafe fn parse_cmdline(ptr: u64, len: u64)

Parse kernel cmdline from Limine boot arguments.

ptr is a pointer to a null-terminated C string provided by the bootloader. len is the length of the cmdline string (including the null terminator).

This function:

• Stores the cmdline globally for /proc/cmdline access.
• Detects console=ttyS0,baud parameters and logs the configuration.