net: tsec: Remove tx snooping support from LS1
Remove the DMCTRL Tx snooping bits (TDSEN and TBDSEN) as a
workaround for LS1. It has been observed that currently
the Tx stops functioning after a fair amount of Tx traffic
with these settings on. These bits are sticky and once set
they cannot be reset from Linux, for instance.
Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>