PM / OPP: Fix parsing of opp-microvolt and opp-microamp properties

Commit 01fb4d3c ("PM / OPP: Parse 'opp-<prop>-<name>'
bindings") broke support for parsing standard opp-microvolt and
opp-microamp properties.  Fix it by setting 'name' string to
proper value for !prop cases.

Fixes: 01fb4d3c ("PM / OPP: Parse 'opp-<prop>-<name> 'bindings")
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/base/power/opp/core.c

@@ -814,7 +814,7 @@ static int opp_parse_supplies(struct dev_pm_opp *opp, struct device *dev,
 
 	if (!prop) {
 		/* Search for "opp-microvolt" */
-		name[13] = '\0';
+		sprintf(name, "opp-microvolt");
 		prop = of_find_property(opp->np, name, NULL);
 
 		/* Missing property isn't a problem, but an invalid entry is */
@@ -855,7 +855,7 @@ static int opp_parse_supplies(struct dev_pm_opp *opp, struct device *dev,
 
 	if (!prop) {
 		/* Search for "opp-microamp" */
-		name[12] = '\0';
+		sprintf(name, "opp-microamp");
 		prop = of_find_property(opp->np, name, NULL);
 	}