drm/msm/dpu: remove dpu_mdss:hwversion

Unused and the extra rpm get/put interferes with handover from
bootloader (ie. happens before we have a chance to check if
things are already enabled).
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>

drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c

@@ -26,7 +26,6 @@ struct dpu_mdss {
 	struct msm_mdss base;
 	void __iomem *mmio;
 	unsigned long mmio_len;
-	u32 hwversion;
 	struct dss_module_power mp;
 	struct dpu_irq_controller irq_controller;
 	struct icc_path *path[2];
@@ -291,10 +290,6 @@ int dpu_mdss_init(struct drm_device *dev)
 
 	dpu_mdss_icc_request_bw(priv->mdss);
 
-	pm_runtime_get_sync(dev->dev);
-	dpu_mdss->hwversion = readl_relaxed(dpu_mdss->mmio);
-	pm_runtime_put_sync(dev->dev);
-
 	return ret;
 
 irq_error: