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/arch/arm/mach-omap2/omap5/emif.c b/arch/arm/mach-omap2/omap5/emif.c
index f3661a0..2de36b6 100644
--- a/arch/arm/mach-omap2/omap5/emif.c
+++ b/arch/arm/mach-omap2/omap5/emif.c
@@ -9,6 +9,7 @@
  */
 
 #include <common.h>
+#include <log.h>
 #include <asm/emif.h>
 #include <asm/arch/sys_proto.h>
 #include <asm/utils.h>