adi_tb_env: Updated TCL variables setting

- Separated Testbenches from HDL dependency

Signed-off-by: Istvan-Zsolt Szekely <[email protected]>

scripts/adi_tb_env.tcl

@@ -4,6 +4,16 @@
 ###############################################################################
 
 # environment related stuff
+if [info exists ::env(ADI_HDL_DIR)] {
+  set ad_hdl_dir [file normalize $::env(ADI_HDL_DIR)]
+} else {
+  error "Missing ADI_HDL_DIR environment variable definition!"
+}
+
 set ad_tb_dir [file normalize [file join [file dirname [info script]] "../"]]
 
-source $ad_tb_dir/../scripts/adi_env.tcl
+if [info exists ::env(ADI_TB_DIR)] {
+  set ad_tb_dir [file normalize $::env(ADI_TB_DIR)]
+}
+
+source $ad_hdl_dir/scripts/adi_env.tcl