Add initial code for IPMI SoftPowerOff functionality

This commit puts a skeleton layout for the IPMI Soft Power Off
functionality.

Change-Id: I7c3ededc9d4038e172d7f6230270ecfe397330e9
Signed-off-by: Vishwanatha Subbanna <vishwa@linux.vnet.ibm.com>
diff --git a/Makefile.am b/Makefile.am
index a703a1b..80a2ed5 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -57,4 +57,5 @@
 nobase_include_HEADERS = \
 	host-ipmid/ipmid-api.h
 
-SUBDIRS = test
+# Forcing the build of self and then subdir
+SUBDIRS = . test softoff