xboxdrv: add dontUseSconsInstall flag

xboxdrv doesn’t use scons for installing, but instead using a
makefile! Everything else is in scons so we have to keep that. I’ve
added a dontUseSconsInstall flag to the scons setup-hook to skip the
automatic overwrite of default “make install” call.

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

@@ -75,7 +75,7 @@ if [ -z "$buildPhase" ]; then
     buildPhase=sconsBuildPhase
 fi
 
-if [ -z "$installPhase" ]; then
+if [ -z "$dontUseSconsInstall" -a -z "$installPhase" ]; then
     installPhase=sconsInstallPhase
 fi