net: dsa: rzn1_a5psw: use devm to enable clocks

The remove function has these in the wrong order. The switch should be
unregistered last. Simpler to use devm so that the right thing is done.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://patch.msgid.link/20250708014144.2514-3-rosenp@gmail.com


Signed-off-by: Paolo Abeni <pabeni@redhat.com>