PMU battery: filenames in sysfs with spaces

By changing drivers/power/pmu_battery.c I now have '_' instead of
' ' (spaces) in /sys:

/sys/devices/platform/pmu-battery.0/power_supply/PMU_battery_0
/sys/class/power_supply/PMU_battery_0

I'm still not sure if some userspace tool out there uses the old paths and
will break now.

Signed-off-by: Christian Kujau <lists@nerdbynature.de>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
diff --git a/drivers/power/pmu_battery.c b/drivers/power/pmu_battery.c
index 60a8cf3..9346a86 100644
--- a/drivers/power/pmu_battery.c
+++ b/drivers/power/pmu_battery.c
@@ -159,7 +159,7 @@
 		if (!pbat)
 			break;
 
-		sprintf(pbat->name, "PMU battery %d", i);
+		sprintf(pbat->name, "PMU_battery_%d", i);
 		pbat->bat.name = pbat->name;
 		pbat->bat.properties = pmu_bat_props;
 		pbat->bat.num_properties = ARRAY_SIZE(pmu_bat_props);