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/tegra20/pmu.c b/arch/arm/mach-tegra/tegra20/pmu.c
index d63db8a..05d0668 100644
--- a/arch/arm/mach-tegra/tegra20/pmu.c
+++ b/arch/arm/mach-tegra/tegra20/pmu.c
@@ -6,6 +6,7 @@
 
 #include <common.h>
 #include <i2c.h>
+#include <log.h>
 #include <tps6586x.h>
 #include <asm/io.h>
 #include <asm/arch/tegra.h>