[U-Boot] tools: env: Use getline rather than fgets when reading config/script

[Tom Rini]

On Thu, Jun 07, 2018 at 12:20:05PM +0000, Alex Kiernan wrote:

> When reading the config file, or a script file, use getline rather than
> fgets so line lengths aren't limited by the size of a compiled in buffer
> (128 characters for config, 1024 for scripts).
> 
> Rename 'dump' to 'line' so it's clear we're working with a line of text.
> 
> Signed-off-by: Alex Kiernan <alex.kiernan at gmail.com>

Applied to u-boot/master, thanks!

-- 
Tom
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