Only include ipmid/api.hpp for the new API

After some feedback from users of the new IPMI API, they wanted to see
two things:
 1) don't require ipmid/api.hpp and ipmid/registration.hpp to be able to
    write new handlers
 2) only require including ipmid/api.hpp (instead of ipmid/api.h)

So now, by simply including ipmid/api.hpp instead of ipmid/api.h
(deprecated), handlers incorporating the new IPMI API can be written.

Change-Id: I446dcce70cff03d4ecc28c658292d052485f77fc
Signed-off-by: Vernon Mauery <vernon.mauery@linux.intel.com>
diff --git a/include/Makefile.am b/include/Makefile.am
index a3051dd..b7c303a 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -1,12 +1,12 @@
 nobase_include_HEADERS = \
 	ipmid/api.hpp \
+	ipmid/api-types.hpp \
 	ipmid/filter.hpp \
 	ipmid/handler.hpp \
 	ipmid/message.hpp \
 	ipmid/message/pack.hpp \
 	ipmid/message/types.hpp \
 	ipmid/message/unpack.hpp \
-	ipmid/registration.hpp \
 	ipmid/api.h \
 	ipmid/iana.hpp \
 	ipmid/oemopenbmc.hpp \