blueprint-dashboard-gateway-image: Increase free space to 500MiB

With the current configuration, the root filesystem can easily get into
an out of space state due to Epiphany downloading Google Safe Browsing
database. This can be more than 200MiB. This change bumps to 500MiB root
free space.

Signed-off-by: Andrei Gherzan <andrei.gherzan@huawei.com>

meta-ohos-blueprints/recipes-core/images/blueprint-dashboard-gateway-image.bb

@@ -18,8 +18,11 @@ IMAGE_INSTALL_append = "\
 	weston-init \
 	"
 
-# 100 MiB of additional storage for config and runtime data.
-IMAGE_ROOTFS_EXTRA_SPACE = "102400"
+# 500 MiB of additional storage for config and runtime data.
+# We need a bit more because Google Safe Browsing database case easily go to
+# around 200MiB.
+# https://gitlab.gnome.org/GNOME/epiphany/-/issues/477
+IMAGE_ROOTFS_EXTRA_SPACE = "524288"
 
 # This is a workaround in case the build runs on ZFS with compression on.
 # It also gives us extra runtime space.