build swiftdriver for lldb pull requests

The old Swift Driver is basically EoL.

Author: kavon

utils/build-presets.ini

@@ -315,7 +315,6 @@ no-swift-stdlib-assertions
 skip-build-benchmarks
 skip-test-swift
 skip-test-cmark
-skip-early-swift-driver
 
 #===------------------------------------------------------------------------===#
 # Incremental buildbots for Darwin OSes