[U-Boot] fs: ext4: fix symlink read function

[Tom Rini]

On Mon, Sep 07, 2015 at 11:20:07AM +0200, Gary Bisson wrote:

> Since last API changes for files >2GB, the read of symlink is broken as
> ext4fs_read_file now returns 0 instead of the length of the actual read.
> 
> Signed-off-by: Gary Bisson <gary.bisson at boundarydevices.com>

Applied to u-boot/master, thanks!

-- 
Tom
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