BugLink: https://bugs.launchpad.net/bugs/1868629

[ Upstream commit 6ba3da44 ]

Add missing attribute validation for vendor subcommand attributes
to the netlink policy.

Fixes: 9e58095f ("NFC: netlink: Implement vendor command support")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>
Signed-off-by: Kelsey Skunberg <kelsey.skunberg@canonical.com>