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/include/configs/controlcenterdc.h b/include/configs/controlcenterdc.h
index 869b94b..c4e9c79 100644
--- a/include/configs/controlcenterdc.h
+++ b/include/configs/controlcenterdc.h
@@ -83,7 +83,7 @@
 
 #define CONFIG_SPL_LIBCOMMON_SUPPORT
 #define CONFIG_SPL_LIBGENERIC_SUPPORT
-#define CONFIG_SPL_I2C_SUPPORT
+#define CONFIG_SPL_I2C
 
 #if CONFIG_SPL_BOOT_DEVICE == SPL_BOOT_SPI_NOR_FLASH
 /* SPL related SPI defines */