Give futex init a proper name

The futex init function is called init(). This is a pain in the neck
when debugging when you code dies in ... init :-)

This renames it to futex_init().
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

kernel/futex.c

@@ -2158,7 +2158,7 @@ static struct file_system_type futex_fs_type = {
 	.kill_sb	= kill_anon_super,
 };
 
-static int __init init(void)
+static int __init futex_init(void)
 {
 	u32 curval;
 	int i;
@@ -2194,4 +2194,4 @@ static int __init init(void)
 
 	return 0;
 }
-__initcall(init);
+__initcall(futex_init);