[regression, bisected] 4.11+ imx uarts broken

[Mika Penttilä]

Hi,

The following commit e61c38d85b7 makes the uarts on i.MX6 nonfunctional (no 
data transmitted or received). 
With e61c38d85b7 reverted the uarts work ok.

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commit e61c38d85b7392e033ee03bca46f1d6006156175
Author: Uwe Kleine-König <u.kleine-koe...@pengutronix.de>
Date:   Tue Apr 4 11:18:51 2017 +0200

    serial: imx: setup DCEDTE early and ensure DCD and RI irqs to be off
 
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--Mika