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: I4b4ebed47aad96d6a73dec2f8cda52569e8c2e9e
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/i2c.hpp b/i2c.hpp
index 105dfbe..652a678 100644
--- a/i2c.hpp
+++ b/i2c.hpp
@@ -1,9 +1,9 @@
 #pragma once
 
-#include <host-ipmid/ipmid-api.h>
+#include <ipmid/api.h>
 
 #include <cstdint>
-#include <host-ipmid/oemrouter.hpp>
+#include <ipmid/oemrouter.hpp>
 
 using std::uint8_t;