merging changes from OPAE branch making this branch

old_rtl/interfaces/VX_inst_exec_wb_inter.v

@@ -0,0 +1,21 @@
+
+`include "../VX_define.v"
+
+`ifndef VX_EXEC_UNIT_WB_INST_INTER
+
+`define VX_EXEC_UNIT_WB_INST_INTER
+
+interface VX_inst_exec_wb_inter ();
+
+	wire[`NT_M1:0][31:0]  alu_result; 
+	wire[31:0]            exec_wb_pc;
+	wire[4:0]      		  rd;
+	wire[1:0]      		  wb;
+	wire[`NT_M1:0]        wb_valid;
+	wire[`NW_M1:0]        wb_warp_num;
+
+
+endinterface
+
+
+`endif