package/autofs: bump to version 5.1.7

package/autofs: bump to version 5.1.7

- Drop patch (already in version)
- Update hash of license files (correction in FSF address):
  https://git.kernel.org/pub/scm/linux/storage/autofs/autofs.git/commit/?id=b74dcdd3f6b05522388729141c29286829c302fc
- Update indentation in hash file (two spaces)

https://git.kernel.org/pub/scm/linux/storage/autofs/autofs.git/tree/CHANGELOG?h=release_5_1_7

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>