dsa: lan9303: consistent naming for PHY address parameter

Name it 'addr' instead of 'port' or 'phy'.

Signed-off-by: Christian Eggers <ceggers@arri.de>
Link: https://patch.msgid.link/20240715123050.21202-1-ceggers@arri.de


Signed-off-by: Jakub Kicinski <kuba@kernel.org>