kconfig: Document SYMBOL_OPTIONAL logic
authorUlf Magnusson <ulfalizer@gmail.com>
Sun, 14 Jan 2018 09:56:20 +0000 (10:56 +0100)
committerChristian Lamparter <chunkeey@gmail.com>
Sun, 10 Feb 2019 20:54:34 +0000 (21:54 +0100)
commit8feb6085df8ac5f420533fba818aad40d0ff0e09
tree80be3fce2d76285732b683cfe7ef7280ae5b52dd
parent3dc782557da1337d56609efe08d2000ea41f9890
kconfig: Document SYMBOL_OPTIONAL logic

Not obvious, especially if you don't already know how choices are
implemented.

No functional changes. Only comments added.

Signed-off-by: Ulf Magnusson <ulfalizer@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
config/menu.c