bpf, sockmap: Check skb_verdict and skb_parser programs explicitly

We are about to allow skb_verdict to run without skb_parser programs
as a first step change code to check each program type specifically.
This should be a mechanical change without any impact to actual result.

Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/160239294756.8495.5796595770890272219.stgit@john-Precision-5820-Tower