proc: remove proc_root from drivers

Remove proc_root export.  Creation and removal works well if parent PDE is
supplied as NULL -- it worked always that way.

So, one useless export removed and consistency added, some drivers created
PDEs with &proc_root as parent but removed them as NULL and so on.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index c4137bb..48bcf20 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -854,7 +854,7 @@
 
 	/* And now for trickier ones */
 #ifdef CONFIG_PRINTK
-	proc_create("kmsg", S_IRUSR, &proc_root, &proc_kmsg_operations);
+	proc_create("kmsg", S_IRUSR, NULL, &proc_kmsg_operations);
 #endif
 	proc_create("locks", 0, NULL, &proc_locks_operations);
 	proc_create("devices", 0, NULL, &proc_devinfo_operations);