Fix kernel crash if Lustre is builtin and fix build error on powerpc

With bellow fixes, we still cannot mount if Lustre is builtin, but we don't crash kernel now.

Peng Tao (5):
      staging/lustre: fix Lustre code link order
      staging/lustre: fix Lustre init functions level
      staging/lustre: don't assert module owner if Lustre is builtin
      staging/lustre: don't assert ln_refcount in LNetGetId
      staging/lustre: fix build error on BIGENDIAN machines