tegra124: Add a stub implementation of the tegra124 SOC.

Most things still needs to be filled in, but this will allow us to build
boards which use this SOC.

Change-Id: Ic790685a78193ccb223f4d9355bd3db57812af39
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: https://chromium-review.googlesource.com/170836
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>
(cherry picked from commit 462456fd00164c10c80eff72240226a04445fe60)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6431
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
diff --git a/src/soc/nvidia/tegra124/Makefile.inc b/src/soc/nvidia/tegra124/Makefile.inc
new file mode 100644
index 0000000..49e2b1f
--- /dev/null
+++ b/src/soc/nvidia/tegra124/Makefile.inc
@@ -0,0 +1,9 @@
+bootblock-y += cbfs.c
+
+romstage-y += cbfs.c
+romstage-y += monotonic_timer.c
+romstage-y += timer.c
+
+ramstage-y += cbfs.c
+ramstage-y += monotonic_timer.c
+ramstage-y += timer.c