intel/fsp2.0: Add END_OF_FIRMWARE in enum fsp_notify_phase

Change-Id: Ib39e828c6e3145957ecc2dacc1f72de793165514
Signed-off-by: Hannah Williams <hannah.williams@intel.com>
Reviewed-on: https://review.coreboot.org/15020
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/drivers/intel/fsp2_0/include/fsp/api.h

@@ -47,7 +47,8 @@ enum fsp_boot_mode {
 
 enum fsp_notify_phase {
 	AFTER_PCI_ENUM = 0x20,
-	READY_TO_BOOT = 0x40
+	READY_TO_BOOT = 0x40,
+	END_OF_FIRMWARE = 0xF0
 };