drm/vc4: txp: Remove duplicate regset

There's already a regset in the vc4_crtc structure so there's no need to
duplicate it in vc4_txp.
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20220711173939.1132294-51-maxime@cerno.tech

drivers/gpu/drm/vc4/vc4_txp.c

@@ -155,7 +155,6 @@ struct vc4_txp {
 	struct drm_writeback_connector connector;
 
 	void __iomem *regs;
-	struct debugfs_regset32 regset;
 };
 
 static inline struct vc4_txp *encoder_to_vc4_txp(struct drm_encoder *encoder)
@@ -494,9 +493,9 @@ static int vc4_txp_bind(struct device *dev, struct device *master, void *data)
 	txp->regs = vc4_ioremap_regs(pdev, 0);
 	if (IS_ERR(txp->regs))
 		return PTR_ERR(txp->regs);
-	txp->regset.base = txp->regs;
-	txp->regset.regs = txp_regs;
-	txp->regset.nregs = ARRAY_SIZE(txp_regs);
+	vc4_crtc->regset.base = txp->regs;
+	vc4_crtc->regset.regs = txp_regs;
+	vc4_crtc->regset.nregs = ARRAY_SIZE(txp_regs);
 
 	drm_connector_helper_add(&txp->connector.base,
 				 &vc4_txp_connector_helper_funcs);
@@ -523,7 +522,7 @@ static int vc4_txp_bind(struct device *dev, struct device *master, void *data)
 
 	dev_set_drvdata(dev, txp);
 
-	vc4_debugfs_add_regset32(drm, "txp_regs", &txp->regset);
+	vc4_debugfs_add_regset32(drm, "txp_regs", &vc4_crtc->regset);
 
 	return 0;
 }