Document the default console= option on Arm and RISC-V that is
"dtuart" indicating a generic UART parsed from a device tree or
ACPI SPCR table. This serial utilizes SERHND_DTUART handle.
Take the opportunity to:
- fix documented x86 default to vga to match OPT_CONSOLE_STR,
- mark dtuart option as available on RISC-V,
- document fall back to /chosen/stdout-path.
Signed-off-by: Michal Orzel <michal.orzel@amd.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
Michal Orzel
422484e55c