lib/fs: Disable ioctl on ppc (fixes #6898) (#6901)

lib/fs/basicfs_copy_range_ioctl.go

@@ -4,7 +4,7 @@
 // License, v. 2.0. If a copy of the MPL was not distributed with this file,
 // You can obtain one at https://mozilla.org/MPL/2.0/.
 
-// +build linux
+// +build linux,!ppc,!ppc64,!ppc64le
 
 package fs