loader/i386/linux: Update linux_kernel_params to match upstream

loader/i386/linux: Update linux_kernel_params to match upstream

Update linux_kernel_params to match the v6.13.7 upstream version of boot_params.
Refactor most things out into structs, as the Linux kernel does.

edid_info should be a struct with "unsigned char dummy[128]" and efi_info should
be a struct as well, starting at 0x1c0. However, for backwards compatibility,
GRUB can have efi_systab at 0x1b8 and padding at 0x1bc (or padding at both spots).
This cuts into the end of edid_info. Make edid_info inline and only make it go
up to 0x1b8.

Signed-off-by: Patrick Colp <patrick.colp@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>