package/opus-tools: bump to version 0.2

package/opus-tools: bump to version 0.2

In this release the Opus decoder opusdec has been converted to use the
opusfile library, and the Opus encoder opusenc has been converted to
use the libopusenc library. These libraries make it easy to robustly
read and write Ogg Opus audio files, and enable some new features.

Due to this, opus-tools now needs to depend on opusfile and
libopusenc. We take this opportunity to reorder alphabetically the
dependencies in Config.in and .mk files.

The license file hash has changed for two reasons:

 - The xiph.org URL was changed from http:// to https://
 - White-space changes

There are no other changes, and no change that affect the licensing
conditions.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>