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/funcmux.c b/arch/arm/mach-tegra/tegra20/funcmux.c
index 2ee0f6e..90fe0cb 100644
--- a/arch/arm/mach-tegra/tegra20/funcmux.c
+++ b/arch/arm/mach-tegra/tegra20/funcmux.c
@@ -5,6 +5,7 @@
 
 /* Tegra20 high-level function multiplexing */
 #include <common.h>
+#include <log.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/funcmux.h>
 #include <asm/arch/pinmux.h>