[XEN][LINUX] Remove autotranslate check from privcmd_mmap().
PowerPC dom0 is autotranslated and needs to be able to map domU memory.
x86 doesn't use privileged autotranslated domains, and IA64 has their own
privcmd_mmap(), so this doesn't affect them.
Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>

diff -r 50220a1b2aaf drivers/xen/privcmd/privcmd.c
--- a/drivers/xen/privcmd/privcmd.c	Thu Jun 21 07:49:49 2007 +0200
+++ b/drivers/xen/privcmd/privcmd.c	Thu Jun 21 07:52:35 2007 +0200
@@ -229,12 +229,6 @@ static struct vm_operations_struct privc
 
 static int privcmd_mmap(struct file * file, struct vm_area_struct * vma)
 {
-#ifndef __powerpc__ /* PowerPC has a trick to safely do this. */
-	/* Unsupported for auto-translate guests. */
-	if (xen_feature(XENFEAT_auto_translated_physmap))
-		return -ENOSYS;
-#endif
-
 	/* DONTCOPY is essential for Xen as copy_page_range is broken. */
 	vma->vm_flags |= VM_RESERVED | VM_IO | VM_DONTCOPY;
 	vma->vm_ops = &privcmd_vm_ops;