From 9ed82c6866e2ab671935a75ea454047e8bddb177 Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Fri, 10 Jan 2014 12:03:35 +0400
Subject: [PATCH] xtensa: implement ndelay

Proper ndelay implementation allows for faster IO rate with drivers that
use ndelay to access their device registers, as otherwise ndelay is
emulated with udelay.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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