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/drivers/pinctrl/ath79/pinctrl_qca953x.c b/drivers/pinctrl/ath79/pinctrl_qca953x.c
index 3166167..c9f9608 100644
--- a/drivers/pinctrl/ath79/pinctrl_qca953x.c
+++ b/drivers/pinctrl/ath79/pinctrl_qca953x.c
@@ -6,6 +6,7 @@
 #include <common.h>
 #include <dm.h>
 #include <errno.h>
+#include <log.h>
 #include <asm/io.h>
 #include <dm/pinctrl.h>
 #include <mach/ar71xx_regs.h>