image-fit: Allow loading FIT image for VxWorks

This adds the check against IH_OS_VXWORKS during FIT image load,
to allow loading FIT image for VxWorks.

Signed-off-by: Lihua Zhao <lihua.zhao@windriver.com>
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/common/image-fit.c b/common/image-fit.c
index 4435bc4..6da69d2 100644
--- a/common/image-fit.c
+++ b/common/image-fit.c
@@ -2007,7 +2007,8 @@
 		fit_image_check_os(fit, noffset, IH_OS_LINUX) ||
 		fit_image_check_os(fit, noffset, IH_OS_U_BOOT) ||
 		fit_image_check_os(fit, noffset, IH_OS_OPENRTOS) ||
-		fit_image_check_os(fit, noffset, IH_OS_EFI);
+		fit_image_check_os(fit, noffset, IH_OS_EFI) ||
+		fit_image_check_os(fit, noffset, IH_OS_VXWORKS);
 
 	/*
 	 * If either of the checks fail, we should report an error, but