Cleanup of CI scripts while looking through logs (displaylink-rpm#192)

* Remove line in ci scripts to change to a non-existence directory.

* Some cleanups to CI scripts

* Some more cleanups of errors being found

* Fix specifying a make target

Remove some unneeded horizontal lines from README (displaylink-rpm#187)

Add Fedora 34 target now that it has been released

Add the ability to build with the bundled EVDI (displaylink-rpm#163)

* Add the ability to build with the bundled EVDI

The latest DisplayLink driver, 5.4, has included a version of EVDI that
works with kernels 5.11 and 5.12. The version that is currently released
on the EVDI github repo does not work with these kernels, even though
they have the same release version.

We can now issue a `make` to use the bundled version. If we want to
build the latest release from github, we can issue a `make unbundled` to
build with what is released in the future on github.

This patch also fixes the globals that were recently added to only be
set if we have not defined these macros through the Makefile. Otherwise,
defining our variables using the Makefile will have no affect on the rpmbuild.

Preparing for v1.7.2 release of evdi

- Update the module version in the necessary places.
- Switch 'make devel' to point to the evdi/v1.7.x branch. This is the only
  branch that works with the current DisplayLink driver release (5.3.1).
- Fix logic in spec for handling RHEL/CentOS 7 and below

Fix CI change

The travis build flagged 'skip_cleanup' as being replaced with cleanup.
The change is in a draft and I missed that.  We need this back in
for releases to work.

Merge pull request displaylink-rpm#118 from elguero/evdi1.6.4-kernel5…

….4-patch

Apply patches to get evdi to compile and install on kernel 5.4.

Updating evdi version to 1.6.4 from 1.6.3

Adding Fedora 31 as a target OS

Updating to latest Displaylink driver 5.2.14

These changes update the driver which is downloaded and packaged to be the
latest version provided by Displaylink which is currently 5.2.14.