soc/apollolake: Put CSE to low power state

fsp_notify(END_OF_FIRMWARE) should be sent to FSP to enable putting CSE
in low power state

Change-Id: I76b8e85ccf077032616ba8e4a333d9264dc65ed2
Signed-off-by: Hannah Williams <hannah.williams@intel.com>
Reviewed-on: https://review.coreboot.org/15054
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/soc/intel/apollolake/chip.c

@@ -138,6 +138,9 @@ static void fsp_notify_dummy(void *arg)
 
 	if (fsp_notify(ph) != FSP_SUCCESS)
 		printk(BIOS_CRIT, "FspNotify failed!\n");
+	/* Call END_OF_FIRMWARE Notify after READY_TO_BOOT Notify */
+	if (ph == READY_TO_BOOT)
+		fsp_notify_dummy((void *)END_OF_FIRMWARE);
 }
 
 BOOT_STATE_INIT_ENTRY(BS_DEV_RESOURCES, BS_ON_EXIT, fsp_notify_dummy,