docs/manual: add 'menuconfig' to out-of-tree examples
If the examples given for launching an out-of-tree build are executed
as-is, this will result in the error message
Please configure Buildroot first (e.g. "make menuconfig")
Even if "make menuconfig" was run before, it's still not going to work
because the out-of-tree build doesn't use the in-tree .config.
Therefore, the example really should start with some config option.
Since "make menuconfig" is used in most other examples of creating a
config, use that here as well. Extend both examples with "menuconfig".
Reported-by: AndreiCherniaev <dungeonlords789@yandex.ru>
Signed-off-by: Arnout Vandecappelle <arnout@mind.be>
(cherry picked from commit c77e31e0b360fffbd893807ccfbc4f35bf2558d1)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Arnout Vandecappelle