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/stm32mp15-microgea-stm32mp1-microdev2_defconfig b/configs/stm32mp15-microgea-stm32mp1-microdev2_defconfig
index 5161bae..be68c8a 100644
--- a/configs/stm32mp15-microgea-stm32mp1-microdev2_defconfig
+++ b/configs/stm32mp15-microgea-stm32mp1-microdev2_defconfig
@@ -17,7 +17,7 @@
 CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION=y
 CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION=3
 CONFIG_SPL_ENV_SUPPORT=y
-CONFIG_SPL_I2C_SUPPORT=y
+CONFIG_SPL_I2C=y
 CONFIG_SPL_POWER=y
 CONFIG_SYS_PROMPT="STM32MP> "
 CONFIG_CMD_ADTIMG=y