userns: Convert tmpfs to use kuid and kgid where appropriate

Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>

init/Kconfig

@@ -953,7 +953,6 @@ config UIDGID_CONVERTED
 	depends on REISERFS_FS = n
 	depends on SQUASHFS = n
 	depends on SYSV_FS = n
-	depends on TMPFS = n
 	depends on UBIFS_FS = n
 	depends on UDF_FS = n
 	depends on UFS_FS = n