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/ls1043aqds_sdcard_qspi_defconfig b/configs/ls1043aqds_sdcard_qspi_defconfig
index 34b528d..2cb088c 100644
--- a/configs/ls1043aqds_sdcard_qspi_defconfig
+++ b/configs/ls1043aqds_sdcard_qspi_defconfig
@@ -32,7 +32,7 @@
 CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR=y
 CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR=0xf0
 CONFIG_SPL_ENV_SUPPORT=y
-CONFIG_SPL_I2C_SUPPORT=y
+CONFIG_SPL_I2C=y
 CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT=y
 CONFIG_SPL_WATCHDOG=y
 CONFIG_CMD_BOOTZ=y