vpnor: Configure a handler table in init_vpnor()

Currently the table just mirrors that which is set by the regular
implementation, however getting to that point requires massaging the
code a little. Thus, separate out this change from one that changes the
behaviour of the commands to improve the readability of the latter
change.

Change-Id: I4007a8a4d508c6d850b8cc878bab8f72bd343498
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
diff --git a/vpnor/Makefile.am.include b/vpnor/Makefile.am.include
index edb97b7..0f3de00 100644
--- a/vpnor/Makefile.am.include
+++ b/vpnor/Makefile.am.include
@@ -2,7 +2,8 @@
 	%reldir%/mboxd_pnor_partition_table.cpp \
 	%reldir%/mboxd_flash.cpp \
 	%reldir%/pnor_partition.cpp \
-	%reldir%/mboxd_lpc_reset.cpp
+	%reldir%/mboxd_lpc_reset.cpp \
+	%reldir%/mboxd_msg.cpp
 
 mboxd_LDFLAGS += -lstdc++fs \
 	$(SDBUSPLUS_LIBS) \