zynqmp: Define ep config for ZynqMP

Define a new config "zynqmp_ep" for ZynqMP instead
of xilinx_zynqmp. This defconfig supports all emulation
platforms of ZynqMP. Also renamed TARGET_XILINX_ZYNQMP
to ARCH_ZYNQMP.

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/board/xilinx/zynqmp/MAINTAINERS b/board/xilinx/zynqmp/MAINTAINERS
index da33340..20ca652 100644
--- a/board/xilinx/zynqmp/MAINTAINERS
+++ b/board/xilinx/zynqmp/MAINTAINERS
@@ -1,6 +1,7 @@
-XILINX_ZYNQMP BOARD
+XILINX_ZYNQMP_EP BOARD
 M:	Michal Simek <michal.simek@xilinx.com>
 S:	Maintained
 F:	board/xilinx/zynqmp/
 F:	include/configs/xilinx_zynqmp.h
-F:	configs/xilinx_zynqmp_defconfig
+F:	include/configs/xilinx_zynqmp_ep.h
+F:	configs/xilinx_zynqmp_ep_defconfig