[PATCH 5/5] doc: thead: lpi4a: Update for S-Mode proper U-Boot support

[Leo Liang]

On Fri, May 30, 2025 at 09:48:51AM +0000, Yao Zi wrote:
> [EXTERNAL MAIL]
> 
> Proper U-Boot for Lichee Pi 4A now runs in S mode instead of M mode,
> which means the extra firmware, OpenSBI, must be built and integrated
> in the image, and the vendor U-Boot cannot chainload the result image
> anymore as it runs in M mode.
> 
> Remove redundant information about chainloading and update build steps
> to mention OpenSBI firmware.
> 
> Signed-off-by: Yao Zi <ziyao at disroot.org>
> ---
>  doc/board/thead/lpi4a.rst | 125 +++++++++++---------------------------
>  1 file changed, 36 insertions(+), 89 deletions(-)

Reviewed-by: Leo Yu-Chi Liang <ycliang at andestech.com>