common: Drop image.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/thermal/imx_scu_thermal.c b/drivers/thermal/imx_scu_thermal.c
index da13121..ecf25a7 100644
--- a/drivers/thermal/imx_scu_thermal.c
+++ b/drivers/thermal/imx_scu_thermal.c
@@ -11,6 +11,7 @@
 #include <dm/device-internal.h>
 #include <dm/device.h>
 #include <asm/arch/sci/sci.h>
+#include <linux/libfdt.h>
 
 DECLARE_GLOBAL_DATA_PTR;