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/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 7b82868..455e152 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -297,7 +297,7 @@
 	char param[32];
 
 	int (*init) (struct ibm_init_struct *);
-	mode_t base_procfs_mode;
+	umode_t base_procfs_mode;
 	struct ibm_struct *data;
 };
 
@@ -8542,7 +8542,7 @@
 		"%s installed\n", ibm->name);
 
 	if (ibm->read) {
-		mode_t mode = iibm->base_procfs_mode;
+		umode_t mode = iibm->base_procfs_mode;
 
 		if (!mode)
 			mode = S_IRUGO;