nuvoton: Apply image overrides to all image types

Right now, nuvoton overrides needed for generating and applying the
bootblock are not applied to images other than obmc-phosphor-image. This
means that core-image-minimal is unbootable on nuvoton platforms.

This change makes the nuvoton overrides apply globally to all images.

(From meta-phosphor rev: 9819cb9533f430797d47dadff558cf4462670976)

Change-Id: If4bef5f8106278fa6ebeb2198bc43fdd2b70a641
Signed-off-by: William A. Kennington III <wak@google.com>
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-phosphor/conf/distro/include/phosphor-base.inc b/meta-phosphor/conf/distro/include/phosphor-base.inc
index dc6d4ae..2a9301d 100644
--- a/meta-phosphor/conf/distro/include/phosphor-base.inc
+++ b/meta-phosphor/conf/distro/include/phosphor-base.inc
@@ -134,6 +134,7 @@
 KERNEL_FEATURES_remove_qemuall = " phosphor-gpio-keys"
 
 IMAGE_CLASSES_append = " image_types_phosphor"
+IMAGE_CLASSES_append_npcm7xx = " image_types_phosphor_nuvoton"
 
 IMAGE_INSTALL_append = " dbus-broker"