selftests: test_tag: prog_tag is calculated using SHA256.

commit 603b441 ("bpf: Update the bpf_prog_calc_tag to use SHA256")
changed digest of prog_tag to SHA256 but forgot to update tests
correspondingly.  This patch helps fix it.

Fixes: 603b441 ("bpf: Update the bpf_prog_calc_tag to use SHA256")
Signed-off-by: Xing Guo <[email protected]>

Author: higuoxing

tools/testing/selftests/bpf/test_tag.c

@@ -116,7 +116,7 @@ static void tag_from_alg(int insns, uint8_t *tag, uint32_t len)
 	static const struct sockaddr_alg alg = {
 		.salg_family	= AF_ALG,
 		.salg_type	= "hash",
-		.salg_name	= "sha1",
+		.salg_name	= "sha256",
 	};
 	int fd_base, fd_alg, ret;
 	ssize_t size;