[PATCH] checkpatch: whitelist Originally-by: signature

[Eugeniu Rosca]

Oftentimes [1], the contributor would like to honor or give credits [2]
to somebody's original ideas in the submission/reviewing process. While
"Co-developed-by:" and "Suggested-by:" (currently whitelisted) could be
employed for this purpose, they are not ideal.

Below matrix attempts portraying/quantifying the subtle differences
between these signatures (subjective/oversimplified):

Helper signature    Contribution "ownership"
None                100% Author
Suggested-by: X     80% Author / 20% "X"
Co-developed-by: X  50% Author / 50% "X"
Originally-by: X    20% Author / 80% "X"

[1] linux (v5.4-rc7) git log --oneline --grep Originally-by | wc -l
    88
[2] https://lore.kernel.org/lkml/alpine.DEB.2.21.1909261144250.5528@xxxxxxxxxxxxxxxxxxxxxxx/

Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Eugeniu Rosca <erosca@xxxxxxxxxxxxxx>
---
 scripts/checkpatch.pl | 1 +
 1 file changed, 1 insertion(+)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 6fcc66afb088..e456aba12bd0 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -486,6 +486,7 @@ our $signature_tags = qr{(?xi:
 	Reviewed-by:|
 	Reported-by:|
 	Suggested-by:|
+	Originally-by:|
 	To:|
 	Cc:
 )};
-- 
2.24.0