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/powerpc/cpu/mpc8xxx/fsl_pamu.c b/arch/powerpc/cpu/mpc8xxx/fsl_pamu.c
index d81af70..3d00de3 100644
--- a/arch/powerpc/cpu/mpc8xxx/fsl_pamu.c
+++ b/arch/powerpc/cpu/mpc8xxx/fsl_pamu.c
@@ -6,6 +6,7 @@
  */
 
 #include <common.h>
+#include <log.h>
 #include <linux/log2.h>
 #include <malloc.h>
 #include <asm/fsl_pamu.h>