V4L/DVB (3336): Bt8xx documentation authors fix

- use one Author per line, which allows us to add more
  authors later without creating a mess.
- Add Michael Krufky due to -git commit
	2cbeddc976645262dbe036d6ec0825f96af70da3

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/Documentation/dvb/bt8xx.txt b/Documentation/dvb/bt8xx.txt
index df6c054..52ed462 100644
--- a/Documentation/dvb/bt8xx.txt
+++ b/Documentation/dvb/bt8xx.txt
@@ -111,4 +111,8 @@
 If you have problems with this please do ask on the mailing list.
 
 --
-Authors: Richard Walker, Jamie Honan, Michael Hunold, Manu Abraham
+Authors: Richard Walker,
+	 Jamie Honan,
+	 Michael Hunold,
+	 Manu Abraham,
+	 Michael Krufky