rk3288: add i2c

BUG=chrome-os-partner:29778
TEST=Build coreboot

Change-Id: I23af280764eb28d3f6b215ab32553fe42ee73272
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: abf5c14c8b32573107d2a1c73a752e740264db7e
Original-Change-Id: I46257cc71cc3cd1e867edf589ddf09f7990d6784
Original-Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Original-Signed-off-by: huang lin <hl@rock-chips.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/209462
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Original-Reviewed-by: David Hendricks <dhendrix@chromium.org>
Original-Commit-Queue: Julius Werner <jwerner@chromium.org>
Reviewed-on: http://review.coreboot.org/8863
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)
diff --git a/src/soc/rockchip/rk3288/Makefile.inc b/src/soc/rockchip/rk3288/Makefile.inc
index 7d5b3a5..e6f6336 100644
--- a/src/soc/rockchip/rk3288/Makefile.inc
+++ b/src/soc/rockchip/rk3288/Makefile.inc
@@ -34,6 +34,7 @@
 romstage-y += timer.c
 romstage-y += monotonic_timer.c
 romstage-$(CONFIG_DRIVERS_UART) += uart.c
+romstage-y += i2c.c
 romstage-y += clock.c
 romstage-y += spi.c
 romstage-y += media.c
@@ -41,6 +42,7 @@
 ramstage-y += cbmem.c
 ramstage-y += timer.c
 ramstage-y += monotonic_timer.c
+ramstage-y += i2c.c
 ramstage-y += clock.c
 ramstage-y += spi.c
 ramstage-y += media.c