package/qt5: use BR2_ENABLE_RUNTIME_DEBUG iso BR2_ENABLE_DEBUG

BR2_ENABLE_DEBUG should just steer the availability of debug symbols and
should have no negative effect on performance.

Introduction of 'assert' statements, 'debug'-type builds with additional
logging, etc. should be steered by BR2_ENABLE_RUNTIME_DEBUG instead.

Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/qt5/qt5base/qt5base.mk

@@ -86,7 +86,7 @@ else
 QT5BASE_CONFIGURE_OPTS += -no-gbm
 endif
 
-ifeq ($(BR2_ENABLE_DEBUG),y)
+ifeq ($(BR2_ENABLE_RUNTIME_DEBUG),y)
 QT5BASE_CONFIGURE_OPTS += -debug
 else
 QT5BASE_CONFIGURE_OPTS += -release