x86: ivybridge: Use the I2C driver to perform SMbus init

Move the init code into the I2C driver.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/configs/chromebook_link_defconfig b/configs/chromebook_link_defconfig
index 0aee2e5..81189f3 100644
--- a/configs/chromebook_link_defconfig
+++ b/configs/chromebook_link_defconfig
@@ -1,5 +1,6 @@
 CONFIG_X86=y
 CONFIG_SYS_MALLOC_F_LEN=0x1800
+CONFIG_DM_I2C=y
 CONFIG_VENDOR_GOOGLE=y
 CONFIG_DEFAULT_DEVICE_TREE="chromebook_link"
 CONFIG_TARGET_CHROMEBOOK_LINK=y
@@ -20,6 +21,7 @@
 CONFIG_CMD_TPM_TEST=y
 CONFIG_OF_CONTROL=y
 CONFIG_CPU=y
+CONFIG_SYS_I2C_INTEL=y
 CONFIG_CMD_CROS_EC=y
 CONFIG_CROS_EC=y
 CONFIG_CROS_EC_LPC=y