drm/vc4: Fix some failure to track __iomem decorations on pointers.

Caught by the kbuild test robot.

v2: Fix the +i I dropped in the first version.
Signed-off-by: Eric Anholt <eric@anholt.net>

drivers/gpu/drm/vc4/vc4_crtc.c

@@ -401,7 +401,8 @@ static void vc4_crtc_atomic_flush(struct drm_crtc *crtc,
 		dlist_next++;
 
 		HVS_WRITE(SCALER_DISPLISTX(vc4_crtc->channel),
-			  (u32 *)vc4_crtc->dlist - (u32 *)vc4->hvs->dlist);
+			  (u32 __iomem *)vc4_crtc->dlist -
+			  (u32 __iomem *)vc4->hvs->dlist);
 
 		/* Make the next display list start after ours. */
 		vc4_crtc->dlist_size -= (dlist_next - vc4_crtc->dlist);

drivers/gpu/drm/vc4/vc4_hvs.c

@@ -75,10 +75,10 @@ void vc4_hvs_dump_state(struct drm_device *dev)
 	for (i = 0; i < 64; i += 4) {
 		DRM_INFO("0x%08x (%s): 0x%08x 0x%08x 0x%08x 0x%08x\n",
 			 i * 4, i < HVS_BOOTLOADER_DLIST_END ? "B" : "D",
-			 ((uint32_t *)vc4->hvs->dlist)[i + 0],
-			 ((uint32_t *)vc4->hvs->dlist)[i + 1],
-			 ((uint32_t *)vc4->hvs->dlist)[i + 2],
-			 ((uint32_t *)vc4->hvs->dlist)[i + 3]);
+			 readl((u32 __iomem *)vc4->hvs->dlist + i + 0),
+			 readl((u32 __iomem *)vc4->hvs->dlist + i + 1),
+			 readl((u32 __iomem *)vc4->hvs->dlist + i + 2),
+			 readl((u32 __iomem *)vc4->hvs->dlist + i + 3));
 	}
 }