checkpatch: disallow --git and --file/--fix

Don't allow these options to be combined.

Miscellanea:

o Add missing $P: to some die("reason message") output
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/3dc7bdaa58490f5906efc11a4d6113e42a087723.camel@perches.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>

scripts/checkpatch.pl

@@ -246,6 +246,8 @@ list_types(0) if ($list_types);
 $fix = 1 if ($fix_inplace);
 $check_orig = $check;
 
+die "$P: --git cannot be used with --file or --fix\n" if ($git && ($file || $fix));
+
 my $exit = 0;
 
 my $perl_version_ok = 1;
@@ -269,11 +271,11 @@ if ($color =~ /^[01]$/) {
 } elsif ($color =~ /^auto$/i) {
 	$color = (-t STDOUT);
 } else {
-	die "Invalid color mode: $color\n";
+	die "$P: Invalid color mode: $color\n";
 }
 
 # skip TAB size 1 to avoid additional checks on $tabsize - 1
-die "Invalid TAB size: $tabsize\n" if ($tabsize < 2);
+die "$P: Invalid TAB size: $tabsize\n" if ($tabsize < 2);
 
 sub hash_save_array_words {
 	my ($hashRef, $arrayRef) = @_;