package/libseccomp: bump version to 2.4.4

package/libseccomp: bump version to 2.4.4

Brings support for 5.8 syscalls and adds various fixes.

Drop 0001-remove-static.patch as it is upstream since 2.4.3:
https://github.com/seccomp/libseccomp/commit/2a1b67825842c6c75ca898f09f0d9c99339e1fa8

Drop 0002-Circumvent-bug-in-uClibc-ng-syscall-on-x86_64-system.patch as the
uClibc-ng issue is fixed in 1.0.33:
https://cgit.uclibc-ng.org/cgi/cgit/uclibc-ng.git/commit/?id=01e863c89fc772a406fe56c6dddb39f71a570c06

Download upstream uploaded tarball rather than using the github macro,
and use upstream hash and reformat hash file. This allows to drop
AUTORECONF = YES.

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