selftests/bpf: Fix prog numbers in test_sockmap

selftests/bpf: Fix prog numbers in test_sockmap

bpf_prog5 and bpf_prog7 are removed from progs/test_sockmap_kern.h in
commit d79a32129b21 ("bpf: Selftests, remove prints from sockmap tests"),
now there are only 9 progs in it, not 11:

	SEC("sk_skb1")
	int bpf_prog1(struct __sk_buff *skb)
	SEC("sk_skb2")
	int bpf_prog2(struct __sk_buff *skb)
	SEC("sk_skb3")
	int bpf_prog3(struct __sk_buff *skb)
	SEC("sockops")
	int bpf_sockmap(struct bpf_sock_ops *skops)
	SEC("sk_msg1")
	int bpf_prog4(struct sk_msg_md *msg)
	SEC("sk_msg2")
	int bpf_prog6(struct sk_msg_md *msg)
	SEC("sk_msg3")
	int bpf_prog8(struct sk_msg_md *msg)
	SEC("sk_msg4")
	int bpf_prog9(struct sk_msg_md *msg)
	SEC("sk_msg5")
	int bpf_prog10(struct sk_msg_md *msg)

This patch updates the array sizes of prog_fd[], prog_attach_type[] and
prog_type[] from 11 to 9 accordingly.

Fixes: d79a32129b21 ("bpf: Selftests, remove prints from sockmap tests")
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/9c10d9f974f07fcb354a43a8eca67acb2fafc587.1715926605.git.tanggeliang@kylinos.cn