dm: powerpc: T1040/T1042: add i2c DM support

This supports i2c DM for SoC T1040/T1042

Signed-off-by: Biwen Li <biwen.li@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/include/configs/T1040QDS.h b/include/configs/T1040QDS.h
index cda8251..ad8efb3 100644
--- a/include/configs/T1040QDS.h
+++ b/include/configs/T1040QDS.h
@@ -1,5 +1,6 @@
 /*
  * Copyright 2013-2014 Freescale Semiconductor, Inc.
+ * Copyright 2020 NXP
  *
  * See file CREDITS for list of people who contributed to this
  * project.
@@ -360,6 +361,8 @@
 #endif
 
 /* I2C */
+
+#ifndef CONFIG_DM_I2C
 #define CONFIG_SYS_I2C
 #define CONFIG_SYS_I2C_FSL		/* Use FSL common I2C driver */
 #define CONFIG_SYS_FSL_I2C_SPEED	50000	/* I2C speed in Hz */
@@ -374,6 +377,9 @@
 #define CONFIG_SYS_FSL_I2C2_OFFSET	0x118100
 #define CONFIG_SYS_FSL_I2C3_OFFSET	0x119000
 #define CONFIG_SYS_FSL_I2C4_OFFSET	0x119100
+#endif
+
+#define CONFIG_SYS_I2C_FSL		/* Use FSL common I2C driver */
 
 #define I2C_MUX_PCA_ADDR		0x77
 #define I2C_MUX_PCA_ADDR_PRI		0x77 /* Primary Mux*/
@@ -385,6 +391,7 @@
 /* LDI/DVI Encoder for display */
 #define CONFIG_SYS_I2C_LDI_ADDR         0x38
 #define CONFIG_SYS_I2C_DVI_ADDR         0x75
+#define CONFIG_SYS_I2C_DVI_BUS_NUM	0
 
 /*
  * RTC configuration