switch procfs to umode_t use

both proc_dir_entry ->mode and populating functions

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index 7711d94..86933ca 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -873,7 +873,7 @@
 
 static const struct battery_file {
 	struct file_operations ops;
-	mode_t mode;
+	umode_t mode;
 	const char *name;
 } acpi_battery_file[] = {
 	FILE_DESCRIPTION_RO(info),