ARM: da850evm_direct_nor_defconfig: Enable DM_SERIAL

With DM enabled, this patch enables DM_SERIAL and removes
the NS16550 initialization from da850_lowlevel since the driver
will take care of that itself.

Signed-off-by: Adam Ford <aford173@gmail.com>
diff --git a/include/configs/da850evm.h b/include/configs/da850evm.h
index 14a6b9e..319f6aa 100644
--- a/include/configs/da850evm.h
+++ b/include/configs/da850evm.h
@@ -116,7 +116,7 @@
  * Serial Driver info
  */
 
-#if defined(CONFIG_SPL_BUILD) || defined(CONFIG_DIRECT_NOR_BOOT)
+#if !CONFIG_IS_ENABLED(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 */