pylintrc: set max line length

BUG=None
TEST=`cros lint` on files caught long lines

Change-Id: I83dcd3c346e56baefbaaa4a8a5efa0637f0b7b46
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/2349982
Reviewed-by: Allen Webb <allenwebb@google.com>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
diff --git a/contrib/pylintrc b/contrib/pylintrc
index 114b229..958413c 100644
--- a/contrib/pylintrc
+++ b/contrib/pylintrc
@@ -92,6 +92,12 @@
 reports=no
 
 
+[FORMAT]
+
+# Maximum number of characters on a single line.
+max-line-length=80
+
+
 [TYPECHECK]
 
 # List of members which are set dynamically and missed by pylint inference