LU-9802 pfl: swapping lcm_entry_count correctly

LU-9802 pfl: swapping lcm_entry_count correctly

It's a u16 integer so it should use le16_to_cpu() instead of
le32_to_cpu().

Test-Parameters: trivial
Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Change-Id: I43c31a76d78aa294a3e3296a1bb69f4d6fb1423d
Reviewed-on: https://review.whamcloud.com/28256
Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Reviewed-by: Niu Yawei <yawei.niu@intel.com>
Tested-by: Jenkins
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>