fit: Add empty fit_print_contents() and fit_image_print()

These functions may be needed in SPL, so add empty variants of them
if CONFIG_SPL_FIT_PRINT is disabled.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>

common/image-fit.c

@@ -542,7 +542,9 @@ void fit_image_print(const void *fit, int image_noffset, const char *p)
 		}
 	}
 }
-
+#else
+void fit_print_contents(const void *fit) { }
+void fit_image_print(const void *fit, int image_noffset, const char *p) { }
 #endif /* !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_FIT_PRINT) */
 
 /**