meta-mchp-mpu-apps: move EGT apps to separate packagegroup

The packagegroup `packagegroup-mchp-apps-egt` was previously included in
`packagegroup-mchp-apps`, which caused EGT applications to be pulled into
headless images as well. This is not intended, since EGT apps are only
needed for graphics-based images.

Rename it to `packagegroup-mchp-egt-apps` to clearly separate it from the
generic apps group, and updated `mchp-graphics-image.bb` to include the new
packagegroup instead of `mchp-egt-demo-init`.

Also remove the duplicated packagegroup.

Reported-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Signed-off-by: Dharma Balasubiramani <dharma.b@microchip.com>

Author: Dharma Balasubiramani

meta-mchp-mpu/meta-mchp-mpu-apps/recipes-mchp/images/mchp-graphics-image.bb

@@ -21,8 +21,8 @@ IMAGE_INSTALL:append = "\
     libplanes \
     libsndfile1 \
     lohit-fonts \
-    mchp-egt-demo-init \
     noto-fonts \
+    packagegroup-mchp-egt-apps \
     packagegroup-mchp-graphics \
     packagegroup-mchp-multimedia \
     packagegroup-mchp-multimedia-camera \

meta-mchp-mpu/meta-mchp-mpu-apps/recipes-mchp/packagegroups/packagegroup-mchp-apps.bbappend

@@ -1,5 +1,5 @@
 PACKAGES += " \
-    packagegroup-mchp-apps-egt \
+    packagegroup-mchp-egt-apps \
 "
 
 RDEPENDS:packagegroup-mchp-apps:mpuall += "\
@@ -17,12 +17,7 @@ RDEPENDS:packagegroup-mchp-apps:sama5d27-wlsom1-ek-sd += "\
     wilc-demo-fs-overlay \
 "
 
-RDEPENDS:packagegroup-mchp-apps:sama5d27-wlsom1-ek-sd += "\
-    wilc-ble-demo \
-    wilc-demo-fs-overlay \
-"
-
-RDEPENDS:packagegroup-mchp-apps-egt:mpuall = "\
+RDEPENDS:packagegroup-mchp-egt-apps:mpuall += "\
     egt-benchmark \
     egt-launcher \
     egt-media \