libbpf-tools: update vmlinux.h with BPF helper flags generated from UAPI
libbpf-tools: update vmlinux.h with BPF helper flags generated from UAPI

Update vmlinux.h to a version generated from same v5.5 tag and default config
with cherry-picked 1aae4bdd7879 ("bpf: Switch BPF UAPI #define constants used
from BPF program side to enums") on top of it. This adds lots of BPF helper
flags often useful from BPF program side.

Signed-off-by: Andrii Nakryiko <1ab6096f60c2d8d3f6ff85bf25d0ee81fb25b434@fb.com>

brendangregg/bcc,tuxology/bcc,brendangregg/bcc,tuxology/bcc,iovisor/bcc,brendangregg/bcc,brendangregg/bcc,iovisor/bcc,tuxology/bcc,tuxology/bcc,brendangregg/bcc,iovisor/bcc,tuxology/bcc,iovisor/bcc,iovisor/bcc