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-tegra/ap.c b/arch/arm/mach-tegra/ap.c
index 84c20a4..532730f 100644
--- a/arch/arm/mach-tegra/ap.c
+++ b/arch/arm/mach-tegra/ap.c
@@ -7,6 +7,7 @@
 /* Tegra AP (Application Processor) code */
 
 #include <common.h>
+#include <log.h>
 #include <linux/bug.h>
 #include <asm/io.h>
 #include <asm/arch/gp_padctrl.h>