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: I747c3a585d646c7ff54efb14968c8f04daafe071
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/configure.ac b/configure.ac
index 1cc46ce..63b6dec 100644
--- a/configure.ac
+++ b/configure.ac
@@ -45,9 +45,11 @@
     [],
     [AC_MSG_ERROR(["phosphor-dbus-interfaces required and not found."])]
 )
-AC_CHECK_HEADER(
-    [host-ipmid],
-    [AC_MSG_ERROR(["phosphor-host-ipmid required and not found."])]
+PKG_CHECK_MODULES(
+    [LIBIPMID],
+    [libipmid],
+    [],
+    [AC_MSG_ERROR([Could not find libipmid...openbmc/phosphor-host-ipmid package required])]
 )
 AC_CHECK_HEADER(
     experimental/filesystem,