configs: omapl138: Enable DM and DT

Enable Driver Model and Device-tree support for omapl138 board
in U-Boot. Also enable DM_SERIAL and DM_I2C.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/include/configs/omapl138_lcdk.h b/include/configs/omapl138_lcdk.h
index 2a390bf..77b89bc 100644
--- a/include/configs/omapl138_lcdk.h
+++ b/include/configs/omapl138_lcdk.h
@@ -20,6 +20,14 @@
 #define	CONFIG_USE_NAND
 
 /*
+* Disable DM_* for SPL build and can be re-enabled after adding
+* DM support in SPL
+*/
+#ifdef CONFIG_SPL_BUILD
+#undef CONFIG_DM_I2C
+#undef CONFIG_DM_I2C_COMPAT
+#endif
+/*
  * SoC Configuration
  */
 #define CONFIG_MACH_OMAPL138_LCDK
@@ -105,11 +113,14 @@
 /*
  * Serial Driver info
  */
+#define CONFIG_SYS_NS16550_CLK	clk_get(DAVINCI_UART2_CLKID)
+#if !defined(CONFIG_DM_SERIAL)
 #define CONFIG_SYS_NS16550_SERIAL
 #define CONFIG_SYS_NS16550_REG_SIZE	-4	/* NS16550 register size */
 #define CONFIG_SYS_NS16550_COM1	DAVINCI_UART2_BASE /* Base address of UART2 */
 #define CONFIG_SYS_NS16550_CLK	clk_get(DAVINCI_UART2_CLKID)
 #define CONFIG_SYS_BAUDRATE_TABLE	{ 9600, 19200, 38400, 57600, 115200 }
+#endif
 
 #define CONFIG_SPI
 #define CONFIG_SYS_SPI_BASE		DAVINCI_SPI1_BASE
@@ -126,7 +137,6 @@
 /*
  * I2C Configuration
  */
-#define CONFIG_SYS_I2C
 #define CONFIG_SYS_I2C_DAVINCI
 #define CONFIG_SYS_DAVINCI_I2C_SPEED	25000
 #define CONFIG_SYS_DAVINCI_I2C_SLAVE	10 /* Bogus, master-only in U-Boot */