Add the platform suspend ops for highbank.
Signed-off-by: Rob Herring Reviewed-by: Jamie Iles Reviewed-by: Shawn Guo
obj-y := clock.o highbank.o system.o obj-$(CONFIG_DEBUG_HIGHBANK_UART) += lluart.o obj-$(CONFIG_SMP) += platsmp.o obj-$(CONFIG_LOCAL_TIMERS) += localtimer.o obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o obj-$(CONFIG_PM_SLEEP) += pm.o