This patch updates the document, "Administrator's Guide | Enabling
drivers | iRMC", by reflecting the changes made in "Add hardware
inspection module for iRMC driver" [1].
[1] commit 37590a86338e94845c74e1b1f7d8d6f61003d447
Change-Id: I38d16b4071a6661412ebaeff5eb0c0439ddc8ec0
Closes-Bug: #1525108