Import d2fb3befb1: Allow using regular installation of qt on Linux (by Maki)

This is an automated proposal to look at a commit made by Maki and import it into Overte

Commit:	d2fb3befb113f69480c133d6fcf6b725014a787f
Author:	Maki
Date:	Wed, 11 Mar 2020 21:33

Allow using regular installation of qt on Linux

Stats:

Filename	Stats	Lines	Added	Removed	Lines in blame
hifi_qt.py		30	17	13	⚠ 0
1 files	-	30	17	13	0

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If the commit is useful, tag it with "Tivoli: Keep", and keep it open until it's merged.
If the commit is not useful, tag it with "Tivoli: Discard", and close it.
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If it's hard to decide, tag it with "Tivoli: Discuss", and keep it open.

Useful commits should be submitted as a PR against Overte. Tag this issue in PR, so that it's automatically closed once the PR is merged.

You can cherry-pick this issue with this command:

git cherry-pick d2fb3befb113f69480c133d6fcf6b725014a787f

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