checkpatch: remove unnecessary + after {8,8}

Pick the following commit from Linux kernel:
commit 66cb4ee0e52ca721f609fd5eec16187189ae5fda
Author: Joe Perches <joe@perches.com>
Date:   Wed Sep 10 09:40:47 2014 +1000

checkpatch: remove unnecessary + after {8,8}

There's a useless "+" use that needs to be removed as perl 5.20 emits a
"Useless use of greediness modifier '+'" message each time it's hit.
Signed-off-by: NMarek Vasut <marex@denx.de>
Cc: Tom Rini <trini@ti.com>

scripts/checkpatch.pl

@@ -2148,7 +2148,7 @@ sub process {
 				"please, no space before tabs\n" . $herevet) &&
 			    $fix) {
 				while ($fixed[$linenr - 1] =~
-					   s/(^\+.*) {8,8}+\t/$1\t\t/) {}
+					   s/(^\+.*) {8,8}\t/$1\t\t/) {}
 				while ($fixed[$linenr - 1] =~
 					   s/(^\+.*) +\t/$1\t/) {}
 			}