iter: Add support to load sleepable iterator program type
iter: Add support to load sleepable iterator program type

Adding support to load sleepable iterator program type,
defined by 'iter.s/...' section.

Signed-off-by: Jiri Olsa <2c6594f608aa3d41e98d48846a6328831f7084ad@kernel.org>

cilium/ebpf,cilium/ebpf