mlearning: nnabla: fix include path
During contribution the folders have moved and the path
should be updated
ifeq ($(CONFIG_NNABLA_RT),y)
CONFIGURED_APPS += $(APPDIR)/mlearning/libnnablart
-CFLAGS += ${shell $(INCDIR) $(INCDIROPT) "$(CC)" $(APPDIR)/mlearning/libnnablart/nnabla-c-runtime/include/nnablart/}
-CXXFLAGS += ${shell $(INCDIR) $(INCDIROPT) "$(CC)" $(APPDIR)/mlearning/libnnablart/nnabla-c-runtime/include/nnablart/}
+CFLAGS += ${shell $(INCDIR) $(INCDIROPT) "$(CC)" $(APPDIR)/mlearning/libnnablart/nnabla-c-runtime/include/}
+CXXFLAGS += ${shell $(INCDIR) $(INCDIROPT) "$(CC)" $(APPDIR)/mlearning/libnnablart/nnabla-c-runtime/include/}
endif
