fpga: zynqpl: Add support for zc7015 device

Just extend tables with this new device.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/board/xilinx/zynq/board.c b/board/xilinx/zynq/board.c
index a5b9bde..5a47149 100644
--- a/board/xilinx/zynq/board.c
+++ b/board/xilinx/zynq/board.c
@@ -23,6 +23,7 @@
 
 /* It can be done differently */
 Xilinx_desc fpga010 = XILINX_XC7Z010_DESC(0x10);
+Xilinx_desc fpga015 = XILINX_XC7Z015_DESC(0x15);
 Xilinx_desc fpga020 = XILINX_XC7Z020_DESC(0x20);
 Xilinx_desc fpga030 = XILINX_XC7Z030_DESC(0x30);
 Xilinx_desc fpga045 = XILINX_XC7Z045_DESC(0x45);
@@ -40,6 +41,9 @@
 	case XILINX_ZYNQ_7010:
 		fpga = fpga010;
 		break;
+	case XILINX_ZYNQ_7015:
+		fpga = fpga015;
+		break;
 	case XILINX_ZYNQ_7020:
 		fpga = fpga020;
 		break;