perf bpf-utils: Constify bpil_array_desc

perf bpf-utils: Constify bpil_array_desc

[ Upstream commit 1654a0e4d576d9e43fbb10ccf6a1b307c5c18566 ]

The array's contents is a compile time constant. Constify to make the
code more intention revealing and avoid unintended errors.

Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Ian Rogers <irogers@google.com>
Link: https://lore.kernel.org/r/20250902181713.309797-3-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Stable-dep-of: 01be43f2a0ea ("perf bpf-utils: Harden get_bpf_prog_info_linear")
Signed-off-by: Sasha Levin <sashal@kernel.org>