treewide: Don't use envHook anymore

This commits needs a MAJOR audit as I oftentimes just guessed which of
`$hostOffset`, `$targetOffset`, or a fixed offset should be used.

pkgs/development/tools/build-managers/cmake/setup-hook.sh

@@ -72,11 +72,7 @@ if [ -z "$dontUseCmakeConfigure" -a -z "$configurePhase" ]; then
     configurePhase=cmakeConfigurePhase
 fi
 
-if [ -n "$crossConfig" ]; then
-    crossEnvHooks+=(addCMakeParams)
-else
-    envHooks+=(addCMakeParams)
-fi
+addEnvHooks "$targetOffset" addCMakeParams
 
 makeCmakeFindLibs(){
   isystem_seen=