trab: make trab_fkt standalone code independent of libgcc

Use our own local functions in lib_arm/ instead.

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/board/trab/Makefile b/board/trab/Makefile
index 6dfcb87..30e5fbb 100644
--- a/board/trab/Makefile
+++ b/board/trab/Makefile
@@ -51,7 +51,8 @@
 	$(LD) -g -Ttext $(LOAD_ADDR) -o $(<:.o=) -e trab_fkt $^ $(LIB) \
 		-L$(obj)../../examples -lstubs \
 		-L$(obj)../../lib_generic -lgeneric \
-		-L$(gcclibdir) -lgcc
+		$(obj)../../lib_arm/div0.o \
+		$(obj)../../lib_arm/_*.o
 	$(OBJCOPY) -O srec $(<:.o=) $@
 
 $(obj)trab_fkt.bin:	$(obj)trab_fkt.srec