board: tegra30: switch to updated pre-dm i2c write

Configure PMIC voltages for early stages using updated
early i2c write.

Tested-by: Thierry Reding <treding@nvidia.com> # Beaver T30
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom <twarren@nvidia.com>
diff --git a/board/nvidia/beaver/Makefile b/board/nvidia/beaver/Makefile
index 80cff3e..5e9e708 100644
--- a/board/nvidia/beaver/Makefile
+++ b/board/nvidia/beaver/Makefile
@@ -2,4 +2,6 @@
 #
 # Copyright (c) 2010-2013, NVIDIA CORPORATION.  All rights reserved.
 
+obj-$(CONFIG_SPL_BUILD) += beaver-spl.o
+
 obj-y	= ../cardhu/cardhu.o