lint: checkpatch: Add SUSPICIOUS_CODE_INDENT test

This patch adds a new test to checkpatch that identifies cases where a
line after a conditional statement is incorrectly intended (possibly
indicating the mistake of forgetting to add braces), like this:

 if (a)
   b;
   c;

Unfortunately, it seems like checkpatch is partially unmaintained in
upstream Linux at the moment with maintainers either not responding at
all or not even willing to look at new patches [1]. Since detecting this
error class is important to coreboot, let's just carry this feature
locally for now.

[1] https://lkml.org/lkml/2021/4/15/1488

Signed-off-by: Julius Werner <jwerner@chromium.org>
Change-Id: I7bb90b56dfc7582271d2b82cb42a2c1df477054f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51838
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>

0 files changed, 0 insertions, 0 deletions