UBI: remove Kconfig debugging option

This patch kills the UBI debugging Kconfig option completely and makes all the
debugging stuff to be always compiled-in. It was pain in the neck to maintain
this useless option because all users I am aware of have debugging enabled
anyway - how else will you diagnose errors otherwise?

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>

drivers/mtd/ubi/vmt.c

@@ -29,11 +29,7 @@
 #include <linux/export.h>
 #include "ubi.h"
 
-#ifdef CONFIG_MTD_UBI_DEBUG
 static int paranoid_check_volumes(struct ubi_device *ubi);
-#else
-#define paranoid_check_volumes(ubi) 0
-#endif
 
 static ssize_t vol_attribute_show(struct device *dev,
 				  struct device_attribute *attr, char *buf);
@@ -712,8 +708,6 @@ void ubi_free_volume(struct ubi_device *ubi, struct ubi_volume *vol)
 	volume_sysfs_close(vol);
 }
 
-#ifdef CONFIG_MTD_UBI_DEBUG
-
 /**
  * paranoid_check_volume - check volume information.
  * @ubi: UBI device description object
@@ -883,4 +877,3 @@ static int paranoid_check_volumes(struct ubi_device *ubi)
 
 	return err;
 }
-#endif