image: Fix inverted logic in architecture check.

Commit 476af299 broke this check when the ifdef lists we consolidated.
Signed-off-by: NThierry Reding <thierry.reding@avionic-design.de>
Acked-by: NMike Frysinger <vapier@gentoo.org>

include/image.h

@@ -615,7 +615,7 @@ void fit_conf_print(const void *fit, int noffset, const char *p);
 #ifndef USE_HOSTCC
 static inline int fit_image_check_target_arch(const void *fdt, int node)
 {
-	return !fit_image_check_arch(fdt, node, IH_ARCH_DEFAULT);
+	return fit_image_check_arch(fdt, node, IH_ARCH_DEFAULT);
 }
 #endif /* USE_HOSTCC */