common: Drop log.h from common header

Move this header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>

drivers/spi/rk_spi.c

@@ -15,6 +15,7 @@
 #include <dm.h>
 #include <dt-structs.h>
 #include <errno.h>
+#include <log.h>
 #include <spi.h>
 #include <time.h>
 #include <linux/errno.h>