upl: Plumb in universal payload to the init process

Read the UPL early in boot so that it is available. For now none of the
information is used.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/common/board_r.c b/common/board_r.c
index d4ba245..f445803 100644
--- a/common/board_r.c
+++ b/common/board_r.c
@@ -521,6 +521,8 @@
 		       uclass_count);
 		if (CONFIG_IS_ENABLED(OF_REAL))
 			printf(", devicetree: %s", fdtdec_get_srcname());
+		if (CONFIG_IS_ENABLED(UPL))
+			printf(", universal payload active");
 		printf("\n");
 		if (IS_ENABLED(CONFIG_OF_HAS_PRIOR_STAGE) &&
 		    (gd->fdt_src == FDTSRC_SEPARATE ||