driver/i2c/mxc: Enable I2C bus 3 and 4
Some SoCs have more than two I2C busses. Instead of adding ifdef
to the driver, macros are put into board header file where
CONFIG_SYS_I2C_MXC is defined.
Signed-off-by: York Sun <yorksun@freescale.com>
CC: Heiko Schocher <hs@denx.de>
diff --git a/include/configs/ls1021atwr.h b/include/configs/ls1021atwr.h
index a13876b..729205f 100644
--- a/include/configs/ls1021atwr.h
+++ b/include/configs/ls1021atwr.h
@@ -205,6 +205,7 @@
#define CONFIG_CMD_I2C
#define CONFIG_SYS_I2C
#define CONFIG_SYS_I2C_MXC
+#define CONFIG_SYS_I2C_MXC_I2C3 /* enable I2C bus 3 */
/* EEPROM */
#ifndef CONFIG_SD_BOOT