4.9-stable patches

4.9-stable patches

added patches:
	dmaengine-imx-sdma-correct-the-dma-transfer-residue-calculation.patch
	drm-amdgpu-add-more-cases-to-dce11-possible-crtc-mask-setup.patch
	drm-ast-call-open_key-before-enable_mmio-in-post-code.patch
	drm-ast-fix-ast2400-post-failure-without-bmc-fw-or-vbios.patch
	drm-ast-fix-test-for-vga-enabled.patch
	drm-atomic-fix-an-error-code-in-mode_fixup.patch
	drm-cancel-drm_fb_helper_dirty_work-on-unload.patch
	drm-cancel-drm_fb_helper_resume_work-on-unload.patch
	drm-edid-add-edid_quirk_force_8bpc-quirk-for-rotel-rsx-1058.patch
	drm-i915-gvt-disable-access-to-stolen-memory-as-a-guest.patch
	drm-imx-imx-tve-do-not-set-the-regulator-voltage.patch
	drm-ttm-make-sure-bos-being-swapped-out-are-cacheable.patch
	drm-vmwgfx-work-around-drm-removal-of-control-nodes.patch