layer.conf: use += for SIGGEN_EXCLUDERECIPES_ABISAFE and split to multiple lines

* += is important, because if oe-core is in BBLAYERS after some other
  layers with SIGGEN_EXCLUDERECIPES_ABISAFE it overwrites their entries

(From OE-Core rev: 3aa1bb01c0fa91bcb7d9a03198d19ac88a1bdecb)

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 10 insertions, 1 deletions

diff --git a/meta/conf/layer.conf b/meta/conf/layer.conf
index c0c2930f0d..dac9c97b62 100644
--- a/meta/conf/layer.conf
+++ b/meta/conf/layer.conf
@@ -18,4 +18,13 @@ PATH := "${PATH}:${COREBASE}/scripts"
 
 QEMUIMAGETESTS := "${COREBASE}/scripts/qemuimage-tests"
 
-SIGGEN_EXCLUDERECIPES_ABISAFE = "sysvinit-inittab shadow-securetty opkg-config-base netbase formfactor xserver-xf86-config pointercal base-files"
+SIGGEN_EXCLUDERECIPES_ABISAFE += " \
+  sysvinit-inittab \
+  shadow-securetty \
+  opkg-config-base \
+  netbase \
+  formfactor \
+  xserver-xf86-config \
+  pointercal \
+  base-files \
+"