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-at91/spl_atmel.c b/arch/arm/mach-at91/spl_atmel.c
index f40bc53..23588e7 100644
--- a/arch/arm/mach-at91/spl_atmel.c
+++ b/arch/arm/mach-at91/spl_atmel.c
@@ -7,6 +7,7 @@
 #include <common.h>
 #include <hang.h>
 #include <init.h>
+#include <log.h>
 #include <asm/io.h>
 #include <asm/arch/at91_common.h>
 #include <asm/arch/at91_pit.h>