drm/msm/mdp5: Add missing mdp5_enable/disable calls

Since runtime PM isn't implemented yet, we need to call
mdp5_enable/disable in a few more places. These would later be
replaced by runtime PM get/put calls.
Signed-off-by: NArchit Taneja <architt@codeaurora.org>
Signed-off-by: NRob Clark <robdclark@gmail.com>

drivers/gpu/drm/msm/mdp/mdp5/mdp5_irq.c

@@ -54,7 +54,9 @@ int mdp5_irq_postinstall(struct msm_kms *kms)
 			MDP5_IRQ_INTF2_UNDER_RUN |
 			MDP5_IRQ_INTF3_UNDER_RUN;
 
+	mdp5_enable(mdp5_kms);
 	mdp_irq_register(mdp_kms, error_handler);
+	mdp5_disable(mdp5_kms);
 
 	return 0;
 }

drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c

@@ -33,6 +33,7 @@ static int mdp5_hw_init(struct msm_kms *kms)
 	unsigned long flags;
 
 	pm_runtime_get_sync(&pdev->dev);
+	mdp5_enable(mdp5_kms);
 
 	/* Magic unknown register writes:
 	 *
@@ -64,6 +65,7 @@ static int mdp5_hw_init(struct msm_kms *kms)
 
 	mdp5_ctlm_hw_reset(mdp5_kms->ctlm);
 
+	mdp5_disable(mdp5_kms);
 	pm_runtime_put_sync(&pdev->dev);
 
 	return 0;