drm/msm/sde: fixup sde_kms shutdown sequence and naming

Improve sde kms error detection and handling during
initialization.

Make naming of functions consistent within sde_kms file.

Change-Id: Ia8946752e7d89d811a46cd4725b2e43e02b9fd39
Signed-off-by: Lloyd Atkinson <latkinso@codeaurora.org>
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index d8de7e0..d8e30f8 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -344,7 +344,7 @@
 		struct drm_atomic_state *state, bool nonblock);
 
 int msm_register_mmu(struct drm_device *dev, struct msm_mmu *mmu);
-void msm_unregister_all_mmu(struct drm_device *dev);
+void msm_unregister_mmu(struct drm_device *dev, struct msm_mmu *mmu);
 
 void msm_gem_submit_free(struct msm_gem_submit *submit);
 int msm_ioctl_gem_submit(struct drm_device *dev, void *data,