i2c: Rename SPL/TPL_I2C_SUPPORT to I2C

Rename these options so that CONFIG_IS_ENABLED can be used with them.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heiko Schocher <hs@denx.de>
diff --git a/configs/clearfog_defconfig b/configs/clearfog_defconfig
index ad943a3..8f28eb8 100644
--- a/configs/clearfog_defconfig
+++ b/configs/clearfog_defconfig
@@ -25,7 +25,7 @@
 # CONFIG_DISPLAY_BOARDINFO is not set
 CONFIG_DISPLAY_BOARDINFO_LATE=y
 CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_DATA_PART_OFFSET=0x1
-CONFIG_SPL_I2C_SUPPORT=y
+CONFIG_SPL_I2C=y
 CONFIG_CMD_TLV_EEPROM=y
 CONFIG_SPL_CMD_TLV_EEPROM=y
 # CONFIG_CMD_FLASH is not set