[BUG] netlib_add_vlan definition and implementation mismatch

[gosha-z]

Description / Steps to reproduce the issue

Found a difference between definition and implementation of netlib_add_vlan function.
in include/netutils/netlib.h it declared as:
int netlib_add_vlan(FAR const char *ifname, int vlanid, int prio);
but in netutils/netlib/netlib_addvlan.c it implemented as
int netlib_add_vlan(FAR const char *ifname, int vlanid)

causing compiler error.

On which OS does this issue occur?

[OS: Linux]

What is the version of your OS?

Ubuntu 24

NuttX Version

main branch

Issue Architecture

[Arch: all]

Issue Area

[Area: Networking]

Host information

No response

Verification

• I have verified before submitting the report.

[gosha-z]

But in nshlib/nsh_netcmds.c netlib_add_vlan called with prio argument

[HedongGao]

Hi @gosha-z thank you for report this issue, and I fixed it in the pr