package/bustle: bump to version 0.8.0

- Update license hash and remove GPL-3.0:
  https://gitlab.freedesktop.org/bustle/bustle/-/commit/c3f2f160c528c874c483a314ebbf997abfd85492
- Use PCAP_CONFIG which is available since
  https://gitlab.freedesktop.org/bustle/bustle/-/commit/7e2daf2984fc4d479b153e899b80e8d669ff54cf
- Update indentation in hash file (two spaces)

https://hackage.haskell.org/package/bustle-0.8.0/changelog



Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>