selftests/net: add tcp_port_share to .gitignore

Add the tcp_port_share test binary to .gitignore to avoid
accidentally staging the build artifact.

Signed-off-by: Gopi Krishna Menon <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: gopi487krishna

tools/testing/selftests/net/.gitignore

@@ -52,6 +52,7 @@ tap
 tcp_fastopen_backup_key
 tcp_inq
 tcp_mmap
+tcp_port_share
 tfo
 timestamping
 tls