package/swupdate: backport fixes
This brings to the swupdate package two fixes [2][3] that have also
been backported in the meta-swupdate Yocto layer, see [1].
[1]: https://github.com/sbabic/meta-swupdate/commit/
3fccf23e2816b176075588309e3e4702a318dfc7
[2]: https://github.com/sbabic/swupdate/commit/
1078af97a5ac5c3091c8e601b836cd69a7aab7fc
[3]: https://github.com/sbabic/swupdate/commit/
e3a6b120ff88f6dc34570002de97754b607966ec
Signed-off-by: Joris Offouga <offougajoris@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>