[FS#284] WRT1900acs, wifi stops workign under havy load

[LEDE Bugs]

The following task has a new comment added:

FS#284 - WRT1900acs, wifi stops workign under havy load
User who did this - Carlo (acarlo)

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It looks like that the new wifi driver fix this issue and make it compatible with the newer fstool:

10.3.2.0-20161123
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=284#comment922