Fix uart status multiple drivers

hw/efinix_fpga/src/uart_wrapper.sv

@@ -48,30 +48,33 @@ always_ff @(posedge clk_50) begin
     if (reset) begin
         state <= READY;
         irqb <= '1;
-        status <= '0;
     end else begin
         state <= next_state;
     end
 end
 
 always_ff @(negedge clk) begin
-    status[1] <= tx_busy | tx_en;
+    if (reset) begin
+        status <= '0;
+    end else begin
+        status[1] <= tx_busy | tx_en;
 
-    status[0] <= status[0] | rx_data_valid;
+        status[0] <= status[0] | rx_data_valid;
-    if (cs & ~addr & rwb) begin
+        if (cs & ~addr & rwb) begin
-        status[0] <= 0;
+            status[0] <= 0;
-    end
+        end
 
-    if (cs & ~rwb) begin
+        if (cs & ~rwb) begin
-        case (addr)
+            case (addr)
-            1'b0: begin
+                1'b0: begin
-                tx_data <= i_data;
+                    tx_data <= i_data;
-            end 
+                end
 
-            1'b1: begin
+                1'b1: begin
-                control <= i_data;
+                    control <= i_data;
-            end
+                end
-        endcase
+            endcase
+        end
     end
 
 end
@@ -80,7 +83,7 @@ always_comb begin
     case (addr)
         1'b0: begin
             o_data = rx_data;
-        end 
+        end
 
         1'b1: begin
             o_data = status;