GitHub/workflows: Test-build with all features

Enable gdbstub in the test builds to catch build errors in the whole
code base.

Signed-off-by: Joerg Roedel <jroedel@suse.de>

.github/workflows/rust.yml

@@ -31,7 +31,7 @@ jobs:
       # ld to work, so build all the objects without performing the
       # final linking step.
       - name: Build
-        run: make stage1/stage1.o stage1/reset.o
+        run: make FEATURES="default,enable-gdb" stage1/stage1.o stage1/reset.o
 
       - name: Run tests
         run: make test