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/tegra124/cpu.c b/arch/arm/mach-tegra/tegra124/cpu.c
index abc050c..c9226af 100644
--- a/arch/arm/mach-tegra/tegra124/cpu.c
+++ b/arch/arm/mach-tegra/tegra124/cpu.c
@@ -5,6 +5,7 @@
  */
 
 #include <common.h>
+#include <log.h>
 #include <asm/io.h>
 #include <asm/arch/ahb.h>
 #include <asm/arch/clock.h>