[PARISC] fix missing TAINT_WARN problem

Al viro broke us with

commit edd63a2763bdae0daa4f0a4d4c5d61d1154352a5
Author: Al Viro <[e-mail]>
Date: Fri Apr 27 13:42:45 2012 -0400

set_restore_sigmask() is never called without SIGPENDING (and never should be)

Although it's pretty much our fault since parisc's asm/bug.h uses
BUGWARN_TAINT but doesn't include the file that defines it. Fix that.

Signed-off-by: James Bottomley <[e-mail]>

arch/parisc/include/asm/bug.h

···
 #ifndef _PARISC_BUG_H
 #define _PARISC_BUG_H
 
+#include <linux/kernel.h>	/* for BUGFLAG_TAINT */
+
 /*
  * Tell the user there is some problem.
  * The offending file and line are encoded in the __bug_table section.