board: k2e-evm: add board support

This patch adds Keystone2 k2e_evm evaluation board support.

Signed-off-by: Hao Zhang <hzhang@ti.com>
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
diff --git a/board/ti/ks2_evm/Makefile b/board/ti/ks2_evm/Makefile
index 774a7d5..00f1164 100644
--- a/board/ti/ks2_evm/Makefile
+++ b/board/ti/ks2_evm/Makefile
@@ -9,3 +9,5 @@
 obj-y += ddr3_cfg.o
 obj-$(CONFIG_K2HK_EVM) += board_k2hk.o
 obj-$(CONFIG_K2HK_EVM) += ddr3_k2hk.o
+obj-$(CONFIG_K2E_EVM) += board_k2e.o
+obj-$(CONFIG_K2E_EVM) += ddr3_k2e.o