From 1080411c6bf9da8e815292ccdb22f64662a38bb2 Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Sat, 14 Dec 2013 00:16:23 +0100
Subject: [PATCH] dma: pl08x: allow zero slave channels

It might happen that a platform wants to use its DMA engine for
memcpy only, and then we have zero slave channels to initialize,
so allow the slave initialization to return zero.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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