IBM: disable pxebooting on NICs

ssh USERID@X.X.X.X

system> asu set PXE.NicPortPxeMode.1 "UEFI and Legacy Support"
system> asu set PXE.NicPortPxeMode.2 "Disabled"
system> asu set PXE.NicPortPxeMode.3 "Disabled"
system> asu set PXE.NicPortPxeMode.4 "Disabled"

I needed to change

system> asu show BroadcomGigabitEthernet*.LegacyBootProtocol
BroadcomGigabitEthernetBCM5719-40F2E9BA7038.LegacyBootProtocol=PXE
BroadcomGigabitEthernetBCM5719-40F2E9BA7039.LegacyBootProtocol=NONE
BroadcomGigabitEthernetBCM5719-40F2E9BA703A.LegacyBootProtocol=NONE
BroadcomGigabitEthernetBCM5719-40F2E9BA703B.LegacyBootProtocol=NONE