staging: lustre: llite: llite_capa.c - fixed warning to use recomended headers <linux/uaccess.h>

- this fixes "WARNING: Use #include <linux/uaccess.h> instead of
  <asm/uaccess.h>"

Signed-off-by: Anil Belur <askb23@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>