This patch makes gen_init_cpio more complete by adding symlink, pipe and
socket support.  It updates scripts/gen_initramfs_list.sh to support the
new types.  The patch applies to the recent mm series that already have the
updated gen_init_cpio and gen_initramfs_list.sh.

From: William Lee Irwin III <wli@holomorphy.com>

The rest of gen_init_cpio.c seems to cast the result of strlen() to handle
this situation, so this patch follows suit while killing off size_t -related
printk() warnings.
Signed-off-by: William Irwin <wli@holomorphy.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>