move blobs and manager header into installation dir

The blobs and manager header will be used by handlers once we've
transitioned to dynamic loading.

Change-Id: Ieae8fcfe383007731cb4f8b2619612c3bfa47f50
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/Makefile.am b/Makefile.am
index 51f7bdd..9373ea2 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -20,4 +20,8 @@
 
 libblobcmds_la_CXXFLAGS = $(SYSTEMD_CFLAGS)
 
+nobase_include_HEADERS = \
+	blobs-ipmid/blobs.hpp \
+	blobs-ipmid/manager.hpp
+
 SUBDIRS = . test