code refactoring for Vivado compatibility

hw/rtl/interfaces/VX_fpu_to_csr_if.sv

@@ -0,0 +1,33 @@
+`ifndef VX_FPU_TO_CSR_IF
+`define VX_FPU_TO_CSR_IF
+
+`include "VX_define.vh"
+
+interface VX_fpu_to_csr_if ();
+
+    wire                 write_enable;
+    wire [`NW_BITS-1:0]  write_wid;
+    fpu_types::fflags_t  write_fflags;
+
+    wire [`NW_BITS-1:0]  read_wid;
+    wire [`INST_FRM_BITS-1:0] read_frm;
+
+    modport master (
+        output write_enable,
+        output write_wid,
+        output write_fflags,
+        output read_wid,
+        input  read_frm
+    );
+
+    modport slave (
+        input  write_enable,
+        input  write_wid,
+        input  write_fflags,
+        input  read_wid,
+        output read_frm
+    );
+
+endinterface
+
+`endif