common: Move some SMP functions out of common.h

These functions belong in cpu_func.h so move them over.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/board/broadcom/bcm_ep/board.c b/board/broadcom/bcm_ep/board.c
index b2469dc..63fb98b 100644
--- a/board/broadcom/bcm_ep/board.c
+++ b/board/broadcom/bcm_ep/board.c
@@ -4,6 +4,7 @@
  */
 
 #include <common.h>
+#include <cpu_func.h>
 #include <asm/io.h>
 #include <config.h>
 #include <netdev.h>