Move the MPC8540 ADS board under board/freescale.

Minor path corrections needed to ensure buildability.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/Makefile b/Makefile
index bf2cce6..f41ec08 100644
--- a/Makefile
+++ b/Makefile
@@ -1911,7 +1911,7 @@
 #########################################################################
 
 MPC8540ADS_config:	unconfig
-	@$(MKCONFIG) $(@:_config=) ppc mpc85xx mpc8540ads
+	@$(MKCONFIG) $(@:_config=) ppc mpc85xx mpc8540ads freescale
 
 MPC8540EVAL_config \
 MPC8540EVAL_33_config \