updated vidado-vitis uart workflow scripts

Generated Top.v can be burnt to Z7-10 board with these scripts with Vivado 2020.1, versions above should be OK.

- vivado project now generates with just a single script
- vitis project now runs with a single script

lab1/vivado/z710/open_project.tcl

@@ -1,33 +1,8 @@
-# Copyright 2021 Howard Lau
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
 
-# Only tested on Vivado 2020.1 on Windows 10
+# setup variables
+set project_dir "./riscv-z710-v2020"
+set project_name "riscv-z710-v2020"
 
-# set variables
-set project_dir riscv-z710
-set project_name riscv-z710
-set part xc7z010clg400-1
-set sources {../../verilog/z710/Top.v ../../verilog/z710/clock_control.v ../../verilog/z710/pass_through.v ../../verilog/z710/Top_reset.v ../../verilog/z710/uart_control.v}
-set test_sources {../../verilog/z710/test.v ../../verilog/z710/top_test.v}
 
-# open the project. will create one if it doesn't exist 
-if {[file exist $project_dir]} {
-    # check that it's a directory
-    if {! [file isdirectory $project_dir]} {
-        puts "$project_dir exists, but it's a file"
-    }
-    open_project $project_dir/$project_name.xpr -part $part 
-} else {
-    source riscv-z710.tcl
-}
+open_project $project_dir/$project_name.xpr
+