MVBLM7, MVSMR: fix Makefile (cleanup bootscript.img)

Fix MVBLM7 and MVSMR Makefiles for correct out-of-tree building
(create "bootscript.img" in build directory instead of source
directory) and cleanup (remove "bootscript.img" when cleaning up).

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Andre Schwarz <andre.schwarz@matrix-vision.de>
diff --git a/board/matrix_vision/mvblm7/Makefile b/board/matrix_vision/mvblm7/Makefile
index b3e3e0b..12c7cb6 100644
--- a/board/matrix_vision/mvblm7/Makefile
+++ b/board/matrix_vision/mvblm7/Makefile
@@ -32,13 +32,13 @@
 
 $(LIB):	$(obj).depend $(OBJS)
 	$(AR) $(ARFLAGS) $@ $(OBJS)
-	@mkimage -T script -C none -n M7_script -d bootscript bootscript.img
+	@mkimage -T script -C none -n M7_script -d bootscript $(obj)bootscript.img
 
 clean:
 	rm -f $(SOBJS) $(OBJS)
 
 distclean:	clean
-	rm -f $(LIB) core *.bak $(obj).depend
+	rm -f $(LIB) core *.bak $(obj).depend $(obj)bootscript.img
 
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