[PATCH] selftests/bpf: declare subprog_noise as static in tailcall_bpf2bpf4

[James Hilliard <james.hilliard1@xxxxxxxxx>]

Due to bpf_map_lookup_elem being declared static we need to also
declare subprog_noise as static.

Fixes the following error:
progs/tailcall_bpf2bpf4.c:26:9: error: 'bpf_map_lookup_elem' is static but used in inline function 'subprog_noise' which is not static [-Werror]
   26 |         bpf_map_lookup_elem(&nop_table, &key);
      |         ^~~~~~~~~~~~~~~~~~~

Signed-off-by: James Hilliard <james.hilliard1@xxxxxxxxx>
---
 tools/testing/selftests/bpf/progs/tailcall_bpf2bpf4.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/progs/tailcall_bpf2bpf4.c b/tools/testing/selftests/bpf/progs/tailcall_bpf2bpf4.c
index b67e8022d500..a017d6b2f1dd 100644
--- a/tools/testing/selftests/bpf/progs/tailcall_bpf2bpf4.c
+++ b/tools/testing/selftests/bpf/progs/tailcall_bpf2bpf4.c
@@ -19,7 +19,7 @@ struct {
 int count = 0;
 int noise = 0;
 
-__always_inline int subprog_noise(void)
+static __always_inline int subprog_noise(void)
 {
 	__u32 key = 0;
 
-- 
2.34.1