package/keyutils: bump version to 1.5.10

package/keyutils: bump version to 1.5.10

Upstream does not provide hashes anymore, replace with self-computed
sha256 hash.

Removed patches applied upstream, renumbered remaining patches:

0001-allow-building-of-the-shared-library-to-be-suppressed.patch
https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/keyutils.git/commit/?id=a4deb71ddc05e951c8be8d46615beed9d408a5c8

0004-Makefile-for-buildroot.patch
https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/keyutils.git/commit/?id=d83b9b827c6c4bc2377dfa073cf5c837b87465e8

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>