dhcpcd: Update to 8.0.2

dhcpcd: Update to 8.0.2

For details see:
https://roy.marples.name/

"NetBSD: Can be build without ARP support but listen to kernel DaD
ND6: Removed NA support from SMALL builds
ND6: Remove and warn about NA issues on OS's other than NetBSD and Linux
script: /tmp files are now cleaned up for systems without open_memstream(3)
configure: open_memstream(3) detected on recent glibc
DHCP: Avoid duplicate read of UDP socket when BPF is also open
IP: Avoid adding address if already exists on OS other than Linux
IP6: Avoid adding address is already exists on Solaris
route: Fixed a NULL de-reference error on statically configured routes
DHCP6: Move to REQUEST when any IA has error no-binding in RENEW/REBIND
DragonFlyBSD: Now compiles and works for
IP: Accept packets with IP header options"

Signed-off-by: Matthias Fischer <matthias.fischer@ipfire.org>
Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>