6.6-stable patches

6.6-stable patches

added patches:
	drm-amd-display-add-null-check-for-dpp-resource.patch
	drm-amd-display-change-the-dmcub-mailbox-memory-location-from-fb-to-inbox.patch
	drm-amd-display-clear-dpcd_sink_ext_caps-if-not-set.patch
	drm-amd-display-enable-fast-plane-updates-on-dcn3.2-and-above.patch
	drm-amd-display-fix-a-null-pointer-dereference-in-amdgpu_dm_i2c_xfer.patch
	drm-amd-display-fix-dsc-not-enabled-on-direct-mst-sink.patch
	drm-amd-display-guard-against-invalid-rptr-wptr-being-set.patch
	drm-amd-pm-fix-error-of-maco-flag-setting-code.patch
	drm-amdgpu-add-a-retry-for-ip-discovery-init.patch
	drm-amdgpu-don-t-use-atrm-for-external-devices.patch
	drm-amdgpu-don-t-use-pci_is_thunderbolt_attached.patch
	drm-amdgpu-fix-error-handling-in-amdgpu_bo_list_get.patch
	drm-amdgpu-fix-error-handling-in-amdgpu_vm_init.patch
	drm-amdgpu-fix-grbm-read-timeout-when-do-mes_self_test.patch
	drm-amdgpu-fix-possible-null-pointer-dereference.patch
	drm-amdgpu-lower-cs-errors-to-debug-severity.patch
	drm-amdgpu-smu13-drop-compute-workload-workaround.patch
	drm-i915-bump-glk-cdclk-frequency-when-driving-multiple-pipes.patch
	drm-i915-fix-potential-spectre-vulnerability.patch
	drm-i915-flush-wc-ggtt-only-on-required-platforms.patch
	drm-i915-mtl-support-hbr3-rate-with-c10-phy-and-edp-in-mtl.patch