floating point support fixes

hw/rtl/VX_writeback.v

@@ -3,19 +3,19 @@
 module VX_writeback #(
     parameter CORE_ID = 0
 ) (
-    input wire      clk,
-    input wire      reset,
+    input wire          clk,
+    input wire          reset,
 
     // inputs
-    VX_commit_if    alu_commit_if,
-    VX_commit_if    lsu_commit_if,  
-    VX_commit_if    mul_commit_if,
-    VX_fpu_to_cmt_if fpu_commit_if,    
-    VX_commit_if    csr_commit_if,
-    VX_cmt_to_issue_if cmt_to_issue_if,
+    VX_exu_to_cmt_if    alu_commit_if,
+    VX_exu_to_cmt_if    lsu_commit_if,  
+    VX_exu_to_cmt_if    mul_commit_if,
+    VX_fpu_to_cmt_if    fpu_commit_if,    
+    VX_exu_to_cmt_if    csr_commit_if,
+    VX_cmt_to_issue_if  cmt_to_issue_if,
 
     // outputs
-    VX_wb_if        writeback_if
+    VX_wb_if            writeback_if
 );
 
     wire alu_valid = alu_commit_if.valid && cmt_to_issue_if.alu_data.wb;