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-imx/misc.c b/arch/arm/mach-imx/misc.c
index 6744fbd..549ef2b 100644
--- a/arch/arm/mach-imx/misc.c
+++ b/arch/arm/mach-imx/misc.c
@@ -5,6 +5,7 @@
 
 #include <common.h>
 #include <lmb.h>
+#include <log.h>
 #include <asm/arch/sys_proto.h>
 #include <linux/errno.h>
 #include <asm/io.h>