staging: lustre: llite: fix dup flags names

The name 'xattr' is used for two different ll_flags bits.
Change the names to be distinct and different, reflecting
the names of the bits used in LL_SBI_xbitnamex #defines.

Signed-off-by: Bob Glossman <bob.glossman@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5586
Reviewed-on: http://review.whamcloud.com/12892


Reviewed-by: Minh Diep <minh.diep@intel.com>
Reviewed-by: Jian Yu <jian.yu@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>