package/kf5/kf5-kcoreaddons: make passing CXXFLAGS to cmake clearer

Better to keep final assignment to *_CONF_OPTS after all assignements to
KF5_KCOREADDONS_CXXFLAGS have been done. So move _CONF_OPTS assignment
after -latomic assignment.

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 6a55afa7b8f0cb095e276f5d041eac17c6260c40)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/kf5/kf5-kcoreaddons/kf5-kcoreaddons.mk

@@ -14,10 +14,11 @@ KF5_KCOREADDONS_DEPENDENCIES = kf5-extra-cmake-modules qt5tools
 KF5_KCOREADDONS_INSTALL_STAGING = YES
 
 KF5_KCOREADDONS_CXXFLAGS = $(TARGET_CXXFLAGS)
-KF5_KCOREADDONS_CONF_OPTS = -DCMAKE_CXX_FLAGS="$(KF5_KCOREADDONS_CXXFLAGS)"
 
 ifeq ($(BR2_TOOLCHAIN_HAS_LIBATOMIC),y)
 KF5_KCOREADDONS_CXXFLAGS += -latomic
 endif
 
+KF5_KCOREADDONS_CONF_OPTS = -DCMAKE_CXX_FLAGS="$(KF5_KCOREADDONS_CXXFLAGS)"
+
 $(eval $(cmake-package))