5.11-stable patches

5.11-stable patches

added patches:
	drm-amd-display-add-a-backlight-module-option.patch
	drm-amd-display-fix-nested-fpu-context-in-dcn21_validate_bandwidth.patch
	drm-amd-pm-bug-fix-for-pcie-dpm.patch
	drm-amd-pm-correct-the-watermark-settings-for-polaris.patch
	drm-amdgpu-display-don-t-assert-in-set-backlight-function.patch
	drm-amdgpu-display-handle-aux-backlight-in-backlight_get_brightness.patch
	drm-amdgpu-display-simplify-backlight-setting.patch
	drm-amdgpu-display-use-gfp_atomic-in-dcn21_validate_bandwidth_fp.patch
	drm-amdgpu-fix-s0ix-handling-when-the-config_amd_pmc-m.patch
	drm-compat-clear-bounce-structures.patch
	drm-fb-helper-only-unmap-if-buffer-not-null.patch
	drm-radeon-also-init-gem-funcs-in-radeon_gem_prime_import_sg_table.patch
	drm-shmem-helper-check-for-purged-buffers-in-fault-handler.patch
	drm-shmem-helper-don-t-remove-the-offset-in-vm_area_struct-pgoff.patch
	drm-use-usb-controller-s-dma-mask-when-importing-dmabufs.patch