perf bpf: Move the LIBBPF_CURRENT_VERSION_GEQ macro to bpf-utils.h

perf bpf: Move the LIBBPF_CURRENT_VERSION_GEQ macro to bpf-utils.h

We need it to fix some other libbpf version dependent issues when
building with LIBBPF_DYNAMIC=1.

Reviewed-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>