blackfin: Move cpu/blackfin/* to arch/blackfin/cpu/*

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
diff --git a/Makefile b/Makefile
index e922ec3..0381c81 100644
--- a/Makefile
+++ b/Makefile
@@ -3745,7 +3745,7 @@
 	       $(obj)board/armltd/{integratorap,integratorcp}/u-boot.lds  \
 	       $(obj)arch/blackfin/lib/u-boot.lds				  \
 	       $(obj)u-boot.lds						  \
-	       $(obj)cpu/blackfin/bootrom-asm-offsets.[chs]
+	       $(obj)arch/blackfin/cpu/bootrom-asm-offsets.[chs]
 	@rm -f $(obj)include/bmp_logo.h
 	@rm -f $(obj)nand_spl/{u-boot.lds,u-boot-spl,u-boot-spl.map,System.map}
 	@rm -f $(obj)onenand_ipl/onenand-{ipl,ipl.bin,ipl.map}