LU-4669 type: change "%llx" to "LPX64”

LU-4669 type: change "%llx" to "LPX64”

This patch fixes the following compile errors by using "LPX64”:
error: format '%llx' expects type 'long long unsigned int',
       but argument 5 has type '__u64'
error: format '%#llx' expects type 'long long unsigned int',
       but argument 3 has type '__u64'

Signed-off-by: Jian Yu <jian.yu@intel.com>
Change-Id: Ica703160923e5f2b987217d97e623fe16eb667ad
Reviewed-on: http://review.whamcloud.com/9811
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>