drm/gma500: Remove never set dev_priv->rpm_enabled flag

The rpm_enabled flag is never set, remove it.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220909115646.99920-4-hdegoede@redhat.com

drivers/gpu/drm/gma500/gma_display.c

@@ -555,18 +555,7 @@ int gma_crtc_page_flip(struct drm_crtc *crtc,
 int gma_crtc_set_config(struct drm_mode_set *set,
 			struct drm_modeset_acquire_ctx *ctx)
 {
-	struct drm_device *dev = set->crtc->dev;
-	struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
-	int ret;
-
-	if (!dev_priv->rpm_enabled)
-		return drm_crtc_helper_set_config(set, ctx);
-
-	pm_runtime_forbid(dev->dev);
-	ret = drm_crtc_helper_set_config(set, ctx);
-	pm_runtime_allow(dev->dev);
-
-	return ret;
+	return drm_crtc_helper_set_config(set, ctx);
 }
 
 const struct drm_crtc_funcs gma_crtc_funcs = {

drivers/gpu/drm/gma500/psb_drv.h

@@ -486,9 +486,6 @@ struct drm_psb_private {
 	unsigned int core_freq;
 	uint32_t iLVDS_enable;
 
-	/* Runtime PM state */
-	int rpm_enabled;
-
 	/* MID specific */
 	bool use_msi;
 	bool has_gct;