check: Inform about missing ranges

In check_unit_address_vs_reg() warning message already says 'reg _or_
ranges' when reg or ranges are present but unit name is missing.  Add
this message for compatibility to say "reg _or_ ranges" when unit name
is present but neither reg nor ranges are present.

Signed-off-by: Arkadiusz Drabczyk <arkadiusz@drabczyk.org>
Message-Id: <20200308165643.19281-1-arkadiusz@drabczyk.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

checks.c

@@ -352,7 +352,7 @@ static void check_unit_address_vs_reg(struct check *c, struct dt_info *dti,
 			FAIL(c, dti, node, "node has a reg or ranges property, but no unit name");
 	} else {
 		if (unitname[0])
-			FAIL(c, dti, node, "node has a unit name, but no reg property");
+			FAIL(c, dti, node, "node has a unit name, but no reg or ranges property");
 	}
 }
 WARNING(unit_address_vs_reg, check_unit_address_vs_reg, NULL);