uml: move hppfs_kern.c to hppfs.c

There's no reason for the _kern in hppfs_kern.c, so move it to hppfs.c.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/hppfs/Makefile

 #
-# Copyright (C) 2002, 2003 Jeff Dike (jdike@karaya.com)
+# Copyright (C) 2002 - 2008 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 # Licensed under the GPL
 #
 
-hppfs-objs := hppfs_kern.o
+hppfs-objs := hppfs.o
 
 obj-y =
-obj-$(CONFIG_HPPFS) += hppfs.o
+obj-$(CONFIG_HPPFS) += $(hppfs-objs)