net: phy: realtek: add RTL8211F register defines

Add some more defines for RTL8211F page and register numbers.

Signed-off-by: Michael Klein <michael@fossekall.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20250504172916.243185-4-michael@fossekall.de


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