package/bluez-alsa: bump to version 1.4.0

package/bluez-alsa: bump to version 1.4.0

Also:
* License file has been renamed: LICENSE.txt -> LICENSE
* Update license file hash -> List of contributors are in a seperate
file now
* Configure option `--with-alsadatadir` has been renamed to `--with-alsaconfdir`
* Configure option `--enable-pcm-test` has been removed
* New optional configure option `ofono` (no build dependency, will
disable internal HFP in favor of oFonos HFP profile)

Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>