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/common/cros_ec.c b/common/cros_ec.c
index e66471e..249d1f1 100644
--- a/common/cros_ec.c
+++ b/common/cros_ec.c
@@ -12,6 +12,7 @@
 #include <cros_ec.h>
 #include <dm.h>
 #include <errno.h>
+#include <log.h>
 
 struct udevice *board_get_cros_ec_dev(void)
 {