[U-Boot] checkpatch: fix left brace warning

[Tom Rini]

On Mon, Jan 04, 2016 at 09:17:19AM +0100, Heiko Schocher wrote:

> using checkpatch with Perl 5.22.0 generates a warning,
> this is fixed in linux through commit:
> 
> commit 4e5d56bdf892e18832a6540b63ebf709966bce2a
> Author: Eddie Kovsky <ewk at edkovsky.org>
> Date:   Wed Sep 9 15:37:52 2015 -0700
> 
> checkpatch: fix left brace warning
> 
> Using checkpatch.pl with Perl 5.22.0 generates the following warning:
> 
> Unescaped left brace in regex is deprecated, passed through in regex;
> 
> This patch fixes the warnings by escaping occurrences of the left brace
> inside the regular expression.
> 
> Adapt it for U-Boot.
> 
> Signed-off-by: Heiko Schocher <hs at denx.de>

Applied to u-boot/master, thanks!

-- 
Tom
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