net: ti: am65-cpsw-nuss: Ignore disabled ethernet ports

net: ti: am65-cpsw-nuss: Ignore disabled ethernet ports

Currently, the bind callback of the driver namely am65_cpsw_nuss_bind()
registers all ethernet ports including the ones that have been disabled
in the device-tree. Since the ports that have been disabled are ought to
be ignored, fix the implementation to register only the enabled ports as
indicated by their 'status' in their respective device-tree node.

Fixes: 3943531a5468 ("net: ti: am65-cpsw-nuss: Define bind method for CPSW driver")
Reported-by: Wadim Egorov <w.egorov@phytec.de>
Closes: https://patch.msgid.link/8b4ac072-125c-493b-b12a-f0a4e9d56e7e@phytec.de
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>