IRQ.txt: add a markup for its title

This simple document only needs a markup for its title to be
using the standard we're adopting for text documents.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Mauro Carvalho Chehab 2017-05-14 15:40:07 -03:00 committed by Jonathan Corbet
parent b4282c7920
commit e7225dc870

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@ -1,4 +1,6 @@
===============
What is an IRQ?
===============
An IRQ is an interrupt request from a device.
Currently they can come in over a pin, or over a packet.