kconfig_lint: More updates for excluded files

- All of the symbols are in the .config, so if .config is include in
the search all of the symbols are always found.
- There are now some Kconfig symbols in the Documentation directory,
so that needs to be excluded.
- 3rdparty has lots of Kconfig symbols that are unrelated to what
is being searched for.

Change-Id: I0ff56d0a0916338a8b94f5210b8e0b3be5194f41
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/17588
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

0 files changed, 0 insertions, 0 deletions