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/ls1046ardb/ddr.c b/board/freescale/ls1046ardb/ddr.c
index 321222d..0e07df5 100644
--- a/board/freescale/ls1046ardb/ddr.c
+++ b/board/freescale/ls1046ardb/ddr.c
@@ -10,6 +10,7 @@
 #ifdef CONFIG_FSL_DEEP_SLEEP
 #include <fsl_sleep.h>
 #endif
+#include <log.h>
 #include <asm/arch/clock.h>
 
 DECLARE_GLOBAL_DATA_PTR;