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/boot_fit.c b/common/boot_fit.c
index ffa4d74..dfc2a31 100644
--- a/common/boot_fit.c
+++ b/common/boot_fit.c
@@ -10,6 +10,7 @@
 #include <common.h>
 #include <errno.h>
 #include <image.h>
+#include <log.h>
 #include <linux/libfdt.h>
 
 static int fdt_offset(const void *fit)