Makefile: remove nand_spl/System.map when cleaning up.
diff --git a/Makefile b/Makefile
index c50a952..cb99636 100644
--- a/Makefile
+++ b/Makefile
@@ -2971,7 +2971,8 @@
$(obj)board/{integratorap,integratorcp}/u-boot.lds \
$(obj)board/{bf533-ezkit,bf533-stamp,bf537-stamp,bf561-ezkit}/u-boot.lds \
$(obj)cpu/blackfin/bootrom-asm-offsets.[chs]
- @rm -f $(obj)include/bmp_logo.h $(obj)nand_spl/{u-boot-spl,u-boot-spl.map}
+ @rm -f $(obj)include/bmp_logo.h
+ @rm -f $(obj)nand_spl/{u-boot-spl,u-boot-spl.map,System.map}
@rm -f $(obj)onenand_ipl/onenand-{ipl,ipl.bin,ipl-2k.bin,ipl-4k.bin,ipl.map}
@rm -f $(obj)api_examples/demo $(VERSION_FILE)
@find $(OBJTREE) -type f \