Blackfin: move CONFIG_BFIN_CPU back to board config.h

This is a revert of 821ad16fa9900c as Wolfgang doesn't like the new code.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/include/configs/bf548-ezkit.h b/include/configs/bf548-ezkit.h
index 1c035cf..e862a8a 100644
--- a/include/configs/bf548-ezkit.h
+++ b/include/configs/bf548-ezkit.h
@@ -11,6 +11,7 @@
 /*
  * Processor Settings
  */
+#define CONFIG_BFIN_CPU             bf548-0.0
 #define CONFIG_BFIN_BOOT_MODE       BFIN_BOOT_PARA