syntax fix

Author: kavitha-etl

rtl/axis_gmii_tx.v

@@ -184,7 +184,7 @@ assign error_underflow = error_underflow_reg;
 assign clk_out =clk;
 assign tdata_out=s_axis_tdata;
 assign talid_out=s_axis_tvalid;
-assign tlast_out=s_axis_tlast;
+assign last_out=s_axis_tlast;
 assign clk_enable_out=clk_enable;
 assign mii_select_out=mii_select;
 assign cfg_tx_enable_out=cfg_tx_enable;

rtl/eth_mac_1g.v

@@ -288,7 +288,7 @@ axis_gmii_tx_inst (
     .clk_out(clk_out),
     .tdata_out(tdata_out),
     .talid_out(talid_out),
-    .tlast_out(tlast_out),
+    .last_out(last_out),
     .clk_enable_out(clk_enable_out),
     .mii_select_out(mii_select_out),
     .cfg_tx_enable_out(cfg_tx_enable_out),