[][checkpatch: fix check failures for backport patches]

Fix checkpatch check failures for backport patches.

With the release of Linux kernel v5.7, the default character limit was
increased to 100. This change was implemented in following commit:
bdc48fa ("checkpatch/coding-style: deprecate 80-column warning").

To ensure successful addition of backport patches to mtk-openwrt-feeds,
we need to set the $max_line_length variable to 100 instead of 80. This
will prevent checkpatch failures when backporting patches to our SDK.


Change-Id: I1889420907d61da3ca34d1fc6966ab169fffd114
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7490161
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index a358af9..39be97a 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -51,7 +51,7 @@
 my @ignore = ();
 my $help = 0;
 my $configuration_file = ".checkpatch.conf";
-my $max_line_length = 80;
+my $max_line_length = 100;
 my $ignore_perl_version = 0;
 my $minimum_perl_version = 5.10.0;
 my $min_conf_desc_length = 4;