x86, irq: Properly tag virtualization entry in /proc/interrupts

The mis-naming likely was a copy-and-paste effect.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/54B9408B0200007800055E8B@mail.emea.novell.com


Signed-off-by: Thomas Gleixner <tglx@linutronix.de>