ARM: dts: k2l: Enable OF_CONTROL and DM

Import k2l specific DT files from Linux Kernel and enable
OF_CONTROL, DM, DM_SERIAL.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
diff --git a/configs/k2l_evm_defconfig b/configs/k2l_evm_defconfig
index 8d6bdbd..47fcad3 100644
--- a/configs/k2l_evm_defconfig
+++ b/configs/k2l_evm_defconfig
@@ -1,9 +1,13 @@
 CONFIG_ARM=y
 CONFIG_ARCH_KEYSTONE=y
 CONFIG_TARGET_K2L_EVM=y
+CONFIG_DM_SERIAL=y
+CONFIG_DEFAULT_DEVICE_TREE="k2l-evm"
 CONFIG_SPL=y
 CONFIG_SYS_PROMPT="K2L EVM # "
 # CONFIG_CMD_IMLS is not set
 # CONFIG_CMD_FLASH is not set
 # CONFIG_CMD_SETEXPR is not set
+CONFIG_OF_CONTROL=y
+CONFIG_DM=y
 CONFIG_SPI_FLASH=y