Convert host-ipmid -> libipmid

phosphor-host-ipmid now exposes a library along with headers for
interfacing with the ipmi daemon. Compile and link against the new
library.

Change-Id: Ifb914004df2b73cff913bf653db14ff2e710434f
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/provider_registration.cpp b/provider_registration.cpp
index 50f06c5..616dc90 100644
--- a/provider_registration.cpp
+++ b/provider_registration.cpp
@@ -5,7 +5,7 @@
 
 #include <dirent.h>
 #include <dlfcn.h>
-#include <host-ipmid/ipmid-api.h>
+#include <ipmid/api.h>
 #include <stdlib.h>
 #include <string.h>