ci: Enable GDB Python scripting support for Windows build

The cross-gdb Python scripting support (`CT_GDB_CROSS_PYTHON`) is
enabled by default, except when performing a Canadian cross build which
our Windows build process does.

This commit explicitly sets `CT_GDB_CROSS_PYTHON=y` when building for
Windows so that the Windows GDB is built with the Python scripting
support.

Signed-off-by: Stephanos Ioannidis <[email protected]>

Author: stephanosio

.github/workflows/ci.yml

@@ -576,6 +576,7 @@ jobs:
           export LIBPYTHON_KIT_ROOT=${WORKSPACE}/mingw-w64-libpython/python-3.6.8
           # Set Python configuration resolver for GDB
           cat <<EOF >> .config
+        CT_GDB_CROSS_PYTHON=y
         CT_GDB_CROSS_PYTHON_BINARY="${LIBPYTHON_KIT_ROOT}/bin/python"
         EOF
         fi