ls1012a: net: pfe: remove pfe stop from bootcmd

ls1012a: net: pfe: remove pfe stop from bootcmd

When using bootefi to boot a EFI binary, u-boot is supposed to
provide networking service for EFI application. Currently, 'pfe stop'
command is called from bootcmd before running bootefi. As a result
network stops working for EFI applications and console is flooded with
"Rx pkt not on expected port" messages.

Implement board_quiesce_devices() for ls1012a boards and call
pfe_command_stop() from it instead of calling 'pfe stop' from
*_bootcmd and bootcmd.

Tested-by: Anji Jagarlmudi <anji.jagarlmudi@nxp.com>
Signed-off-by: Mian Yousaf Kaukab <ykaukab@suse.de>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
[Fixed checkpatch space error]
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>