TAKE - fix a dmapi compile problem in test5

[Dean Roehrich <roehrich@xxxxxxxxxxxxxxxxxxxxxx>]

add another header, so this will link under test5

Modid:  2.4.0-test1-xfs:slinx:71158a
Date:  Wed Aug  2 11:18:26 PDT 2000
Workarea:  clink.americas.sgi.com:/data/clink/a/roehrich/2.4.0-test1-xfs
SPRs closed:  
Severity:  Minor
Modtype:  Bugfix
Test Description:  
built and linked
Keywords:  NONE
Requested reviewer(s):  
Author:  roehrich

The following file(s) were checked into:
  bonnie.engr.sgi.com:/isms/slinx/2.4.0-test1-xfs

linux/fs/xfs/dmapi/dmapi_register.c - 1.2
        - add another header, so this will link under test5