dm: arm64: ls1046a: add i2c DM support

This supports i2c DM and enables CONFIG_DM_I2C
for SoC LS1046A

Signed-off-by: Biwen Li <biwen.li@nxp.com>
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/include/configs/ls1046a_common.h b/include/configs/ls1046a_common.h
index 978df3c..e80c299 100644
--- a/include/configs/ls1046a_common.h
+++ b/include/configs/ls1046a_common.h
@@ -16,6 +16,7 @@
 #define SPL_NO_QSPI
 #define SPL_NO_USB
 #define SPL_NO_SATA
+#undef CONFIG_DM_I2C
 #endif
 #if defined(CONFIG_SPL_BUILD) && \
 	(defined(CONFIG_NAND_BOOT) || defined(CONFIG_QSPI_BOOT))
@@ -126,7 +127,17 @@
 #endif
 
 /* I2C */
+#ifndef CONFIG_DM_I2C
 #define CONFIG_SYS_I2C
+#define CONFIG_SYS_I2C_MXC
+#define CONFIG_SYS_I2C_MXC_I2C1		/* enable I2C bus 1 */
+#define CONFIG_SYS_I2C_MXC_I2C2		/* enable I2C bus 2 */
+#define CONFIG_SYS_I2C_MXC_I2C3		/* enable I2C bus 3 */
+#define CONFIG_SYS_I2C_MXC_I2C4		/* enable I2C bus 4 */
+#else
+#define CONFIG_I2C_SET_DEFAULT_BUS_NUM
+#define CONFIG_I2C_DEFAULT_BUS_NUMBER 0
+#endif
 
 /* PCIe */
 #define CONFIG_PCIE1		/* PCIE controller 1 */