drm/i915: Drop I915_PARAM_HAS_FULL_PPGTT again

At least for now userspace has no business at all to know that we
switch address spaces around. For any need it has to know whether hw
ppgtt is enabled (e.g. to set bits in MI commands correctly) it can
inquire the existing ppgtt param.

v2: Avoid ternary operator precedence fail (Chris).
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_dma.c

@@ -988,7 +988,7 @@ static int i915_getparam(struct drm_device *dev, void *data,
 		value = HAS_WT(dev);
 		break;
 	case I915_PARAM_HAS_ALIASING_PPGTT:
-		value = dev_priv->mm.aliasing_ppgtt ? 1 : 0;
+		value = dev_priv->mm.aliasing_ppgtt || USES_FULL_PPGTT(dev);
 		break;
 	case I915_PARAM_HAS_WAIT_TIMEOUT:
 		value = 1;
@@ -1011,9 +1011,6 @@ static int i915_getparam(struct drm_device *dev, void *data,
 	case I915_PARAM_HAS_EXEC_HANDLE_LUT:
 		value = 1;
 		break;
-	case I915_PARAM_HAS_FULL_PPGTT:
-		value = USES_FULL_PPGTT(dev);
-		break;
 	default:
 		DRM_DEBUG("Unknown parameter %d\n", param->param);
 		return -EINVAL;

include/uapi/drm/i915_drm.h

@@ -337,7 +337,6 @@ typedef struct drm_i915_irq_wait {
 #define I915_PARAM_HAS_EXEC_NO_RELOC	 25
 #define I915_PARAM_HAS_EXEC_HANDLE_LUT   26
 #define I915_PARAM_HAS_WT     	 	 27
-#define I915_PARAM_HAS_FULL_PPGTT	 28
 
 typedef struct drm_i915_getparam {
 	int param;