50_local.conf.inc: Fix agl-sota feature for rpi3

Use "+=" instead of "=" for setting IMAGE_CLASSES
in Raspberry Pi 3 template for local.conf to
prevent failure while building images with
enabled agl-sota feature.

Bug-AGL: SPEC-254

Change-Id: I5384376908b7ceac1e03a4afff7b9d617e8a379b
Suggested-by: Anton Gerasimov <anton@advancedtelematic.com>
Signed-off-by: Leon Anavi <leon.anavi@konsulko.com>

diff --git a/templates/machine/raspberrypi3/50_local.conf.inc b/templates/machine/raspberrypi3/50_local.conf.inc
index f6bb6e5..4584f3c 100644 (file)
--- a/templates/machine/raspberrypi3/50_local.conf.inc
+++ b/templates/machine/raspberrypi3/50_local.conf.inc
@@ -5,7 +5,7 @@ GPU_MEM = "128"
 CORE_IMAGE_EXTRA_INSTALL += "wayland weston"
 
 MULTI_PROVIDER_WHITELIST += "virtual/libgl virtual/egl virtual/libgles1 virtual/libgles2"
-IMAGE_CLASSES = "sdcard_image-rpi-gdp"
+IMAGE_CLASSES += "sdcard_image-rpi-gdp"
 KERNEL_DEVICETREE_append = " overlays/vc4-kms-v3d-overlay.dtb"
 PREFERRED_VERSION_linux-raspberrypi = "4.4.%"
 PREFERRED_VERSION_mesa = "11.%"