common: Drop log.h from common header

Move this header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/freescale/p1022ds/p1022ds.c b/board/freescale/p1022ds/p1022ds.c
index 244a053..d10160d 100644
--- a/board/freescale/p1022ds/p1022ds.c
+++ b/board/freescale/p1022ds/p1022ds.c
@@ -10,6 +10,7 @@
 #include <env.h>
 #include <image.h>
 #include <init.h>
+#include <log.h>
 #include <net.h>
 #include <pci.h>
 #include <asm/processor.h>