net: filter: rename 'struct sock_filter_int' into 'struct bpf_insn'

eBPF is used by socket filtering, seccomp and soon by tracing and
exposed to userspace, therefore 'sock_filter_int' name is not accurate.
Rename it to 'bpf_insn'

Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/kernel/seccomp.c b/kernel/seccomp.c
index 301bbc2..565743d 100644
--- a/kernel/seccomp.c
+++ b/kernel/seccomp.c
@@ -248,7 +248,7 @@
 	if (ret)
 		goto free_prog;
 
-	/* Convert 'sock_filter' insns to 'sock_filter_int' insns */
+	/* Convert 'sock_filter' insns to 'bpf_insn' insns */
 	ret = sk_convert_filter(fp, fprog->len, NULL, &new_len);
 	if (ret)
 		goto free_prog;