staging: lustre: libcfs: remove ccflags from Makefile

There were two paths being added, yet only one was needed.  Remove both,
and fix up the 3 .c files to point to the location of the needed .h
file.

Cc: Andreas Dilger <andreas.dilger@intel.com>
Cc: Oleg Drokin <oleg.drokin@intel.com>
Cc: hpdd-discuss <hpdd-discuss@lists.01.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>