kbuild: fix option processing for -I in headerdep

-I takes an argument.  Without this change only a 1 is added to
@opt_include which is not helpful.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Vegard Nossum <vegard.nossum@gmail.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/scripts/headerdep.pl b/scripts/headerdep.pl
index 97399da89ef2..b7f6c560e24d 100755
--- a/scripts/headerdep.pl
+++ b/scripts/headerdep.pl
@@ -19,7 +19,7 @@ my $opt_graph;
         version => \&version,
 
         all     => \$opt_all,
-        I       => \@opt_include,
+        "I=s"   => \@opt_include,
         graph   => \$opt_graph,
 );