devfs creptomancy

As already state in the thread about Adam's devfs reimplementation there is much devfs functionality that is unused or only used by the arch/ia64/sn/ code that currently doesn't even compile in 2.5 and that will get it's own filesystem that fits the needs better when SGI moves to 2.6.

(the first hunk is the only exception to the above rule, but it's just a debug printk :))

 drivers/media/radio/miropcm20-rds.c |    3
 fs/devfs/base.c                     |  141 ------------------------------------ include/linux/devfs_fs_kernel.h     |   44 -----------
 3 files changed, 2 insertions(+), 186 deletions(-)

@@ -119,9 +119,6 @@
 		return -EINVAL;
 
 	printk("miropcm20-rds: userinterface driver loaded.\n");
-#if DEBUG
-	printk("v4l-name: %s\n", devfs_get_name(pcm20_radio.devfs_handle, 0));
-#endif
 	return 0;
 }