superio/smsc/lpc47n207: Hook into build system

Provide proper Makefile and Kconfig components so
that this superio is built as object code. Select
superio component in mainboard Kconfig's to bring
in the link-time symbols and thereby removing the
need for .c inclusion.

N.B. The LPC47N207 Super I/O does not physically exist
on these boards. The Super I/O is found on external LPC
debug card hardware and so should really be made selectable.
However, this is beyond the scope of this specific fix, that
rids us of .c inclusions in romstage.c

Change-Id: I451c3a81c4b5beca1ed65e27467a7393d2521dae
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/8084
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marc.jones@se-eng.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/src/superio/smsc/lpc47n207/Makefile.inc b/src/superio/smsc/lpc47n207/Makefile.inc
new file mode 100644
index 0000000000..08e1387ce4
--- /dev/null
+++ b/src/superio/smsc/lpc47n207/Makefile.inc
@@ -0,0 +1,21 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2014 Edward O'Callaghan <eocallaghan@alterapraxis.com>
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 2 of the License, or
+## (at your option) any later version.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program; if not, write to the Free Software
+## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+##
+
+romstage-$(CONFIG_SUPERIO_SMSC_LPC47N207) += early_serial.c