The booti command does not use the CONFIG_SYS_BOOTM_LEN value and
instead sets a maximum decompression-buffer size of 10x the size of the
compressed data.
Add this as an option in bootm_load_os() so that booting without the
command-line works in the same way as the 'booti' command.
Link: https://lore.kernel.org/u-boot/2ad3b1c5-b6e7-47e2-b225-834b821cc5c4@kwiboo.se/
Signed-off-by: Simon Glass <sjg@chromium.org>
Reported-by: Jonas Karlman <jonas@kwiboo.se>
Fixes: b13408021d ("boot: pxe: Use bootm_...() functions where possible")