tegra124: Implement the tegra i2c driver.

This uses the packet mode of the controller since that allows transfering more
data at a time.

Change-Id: I8329e5f915123cb55464fc28f7df9f9037b0446d
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: https://chromium-review.googlesource.com/172402
Reviewed-by: Ronald Minnich <rminnich@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
(cherry picked from commit 4444cd626a55c8c2486cda6ac9cfece4e53dd0d3)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6703
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
diff --git a/src/soc/nvidia/tegra124/Makefile.inc b/src/soc/nvidia/tegra124/Makefile.inc
index 683d940..d4d16fe 100644
--- a/src/soc/nvidia/tegra124/Makefile.inc
+++ b/src/soc/nvidia/tegra124/Makefile.inc
@@ -2,8 +2,10 @@
 
 bootblock-y += cbfs.c
 bootblock-y += clock.c
+bootblock-y += i2c.c
 bootblock-y += monotonic_timer.c
 bootblock-y += ../tegra/gpio.c
+bootblock-y += ../tegra/i2c.c
 bootblock-y += ../tegra/pingroup.c
 bootblock-y += ../tegra/pinmux.c
 bootblock-y += timer.c