scripts/checkpatch: Avoid author email mangled by qemu-*@nongnu.org

Commit f5177798d8 ("scripts: report on author emails
that are mangled by the mailing list") added a check
for qemu-devel@ list, extend the regexp to cover more
such qemu-trivial@, qemu-block@ and qemu-ppc@.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

scripts/checkpatch.pl

@@ -1573,7 +1573,7 @@ sub process {
 			$is_patch = 1;
 		}
 
-		if ($line =~ /^(Author|From): .* via .*<qemu-devel\@nongnu.org>/) {
+		if ($line =~ /^(Author|From): .* via .*<qemu-\w+\@nongnu\.org>/) {
 		    ERROR("Author email address is mangled by the mailing list\n" . $herecurr);
 		}