From 29b5357d25ba1528531ef9532b5743a32fdf8cd2 Mon Sep 17 00:00:00 2001
From: Rabin Vincent <rabin@rab.in>
Date: Fri, 31 Jul 2015 14:48:57 +0200
Subject: [PATCH] gpio: etraxfs: add interrupt support

On ETRAX FS, all pins on the first port (and only the first port) have
interrupt support.

On ARTPEC-3, all pins on all ports have interrupt support.  However,
there are only eight interrupts.  Each of the interrupts is associated
with a group of pins and for each interrupt the one pin from the group
which will trigger it can be selected.

Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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