[XPU] Initial support for GDN attention on Qwen3-next/Qwen3.5 (#33657)
Signed-off-by: Yan Ma <yan.ma@intel.com>
Signed-off-by: Chendi Xue <chendi.xue@intel.com>
Co-authored-by: Chendi Xue <chendi.xue@intel.com>
Co-authored-by: Kunshang Ji <kunshang.ji@intel.com>