kconfig: Document SYMBOL_OPTIONAL logic
authorUlf Magnusson <ulfalizer@gmail.com>
Sun, 14 Jan 2018 09:56:20 +0000 (10:56 +0100)
committerMasahiro Yamada <yamada.masahiro@socionext.com>
Sun, 21 Jan 2018 15:49:32 +0000 (00:49 +0900)
commit3e41ba05b6d60cd54e64639b308be62c12308a04
tree9c99091340bd13b1a2b57077581598e8bbffe6a6
parenteea199b445f64c038b1d868bd52700510843ccd6
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>
scripts/kconfig/menu.c