[PATCH v3 05/13] no-gplv3.inc: Convert confusing appends to override syntax

[Michal Sieron <michalwsieron@gmail.com>]

While in this case `CORE_IMAGE_EXTRA_INSTALL::pn-* +=` wouldn't result
in any unwanted override, there is no guarantee there won't be a change,
which would be hidden by this override. To avoid any surprises in the
future let's use `:append:pn-* =` syntax here.

Signed-off-by: Michal Sieron <michalwsieron@gmail.com>
---
 meta/conf/distro/include/no-gplv3.inc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/meta/conf/distro/include/no-gplv3.inc b/meta/conf/distro/include/no-gplv3.inc
index 705e05319a..2034204035 100644
--- a/meta/conf/distro/include/no-gplv3.inc
+++ b/meta/conf/distro/include/no-gplv3.inc
@@ -18,9 +18,9 @@ PACKAGECONFIG:remove:pn-bluez5 = "readline"
 # dnf pulls in gpg which is gpl3; it also pulls in python3-rpm which pulls in rpm-build which pulls in bash
 # so install rpm but not dnf
 IMAGE_FEATURES:remove:pn-core-image-weston = "package-management"
-CORE_IMAGE_EXTRA_INSTALL:pn-core-image-weston += "rpm"
+CORE_IMAGE_EXTRA_INSTALL:append:pn-core-image-weston = " rpm"
 IMAGE_FEATURES:remove:pn-core-image-full-cmdline = "package-management"
-CORE_IMAGE_EXTRA_INSTALL:pn-core-image-full-cmdline += "rpm"
+CORE_IMAGE_EXTRA_INSTALL:append:pn-core-image-full-cmdline = " rpm"
 
 # matchbox-terminal depends on vte, which is gpl3
 CORE_IMAGE_BASE_INSTALL:remove:pn-core-image-weston = "matchbox-terminal"

-- 
2.53.0