remove IPMI_CC

Since IPMI_CC declared in api.h has been gradually deprecated,
this submission will use ipmi::cc in api.hpp instead.

Change-Id: I490c4e38869b4f59a9dc0645c28eb721eab72980
Signed-off-by: George Liu <liuxiwei@ieisystem.com>
diff --git a/ethstats.hpp b/ethstats.hpp
index 520ed15..9f2cd40 100644
--- a/ethstats.hpp
+++ b/ethstats.hpp
@@ -4,6 +4,8 @@
 
 #include <ipmid/api.h>
 
+#include <ipmid/api-types.hpp>
+
 #include <cstdint>
 #include <string>