commit a0ae981eba8f07dbc74bce38fd3a462b69a5bc8e
author Masahiro Yamada <yamada.masahiro@socionext.com> Thu Apr 13 07:25:21 2017 +0900
committer Masahiro Yamada <yamada.masahiro@socionext.com> Sun Apr 23 16:09:15 2017 +0900
tree 02cbf65f38f581ce0afdcd3c0642bf5c0127b202
parent cf0c3e68aa81f992b0301f62e341b710d385bf68

kbuild: drop -Wno-unknown-warning-option from clang options

Since commit c3f0d0bc5b01 ("kbuild, LLVMLinux: Add -Werror to
cc-option to support clang"), cc-option and friends work nicely
for clang.

However, -Wno-unknown-warning-option makes clang happy with any
unknown warning options even if -Werror is specified.

Once -Wno-unknown-warning-option is added, any succeeding call of
cc-disable-warning is evaluated positive, then unknown warning
options are accepted.  This should be dropped.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>