drm/xe: Fix register definition order in xe_regs.h

Swap XEHP_CLOCK_GATE_DIS(0x101014) with GU_DEBUG(x101018).

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240702183704.1022-2-michal.wajdeczko@intel.com