net: ethernet: ti: am65-cpts: fix i2083 genf (and estf) Reconfiguration Issue

The new bit TX_GENF_CLR_EN has been added in AM65x SR2.0 to fix i2083
errata, which can be just set unconditionally for all SoCs.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>