fixed definition of the board path in tcl script -

[iAnyKey]

it is currently stored indeendenly to projects and not in /prj folder

[iAnyKey]

how to reproduce issue:
run make PRJ=classic

results in :

****** Vivado v2019.2 (64-bit)
  **** SW Build 2708876 on Wed Nov  6 21:39:14 MST 2019
  **** IP Build 2700528 on Thu Nov  7 00:09:20 MST 2019
    ** Copyright 1986-2019 Xilinx, Inc. All Rights Reserved.

source red_pitaya_vivado_Z10.tcl
# cd prj/$::argv
# tclapp::install -quiet ultrafast
# set path_brd brd
# set path_rtl rtl
# set path_ip  ip
# set path_sdc sdc
# set path_out out
# set path_sdk sdk
# file mkdir $path_out
# file mkdir $path_sdk
# set_param board.repoPaths [list $path_brd]
# set part xc7z010clg400-1
# create_project -in_memory -part $part
WARNING: [Board 49-91] Board repository path 'brd' does not exist, it will not be used to search board files.
...