5.12-stable patches

5.12-stable patches

added patches:
	dm-snapshot-fix-a-crash-when-an-origin-has-no-snapshots.patch
	dm-snapshot-fix-crash-with-transient-storage-and-zero-chunk-size.patch
	dma-buf-fix-unintended-pin-unpin-warnings.patch
	drm-amdgpu-disable-3dcgcg-on-picasso-raven1-to-avoid-compute-hang.patch
	drm-amdgpu-fix-gpu-tlb-update-error-when-page_size-amdgpu_page_size.patch
	drm-amdgpu-update-gc-golden-setting-for-navi12.patch
	drm-amdgpu-update-sdma-golden-setting-for-navi12.patch
	drm-radeon-use-the-dummy-page-for-gart-if-needed.patch
	gpio-tegra186-don-t-set-parent-irq-affinity.patch
	ipc-mqueue-msg-sem-avoid-relying-on-a-stack-reference-past-its-expiry.patch
	kcsan-fix-debugfs-initcall-return-type.patch
	mmc-meson-gx-also-check-sd_io_rw_extended-for-scatterlist-size-alignment.patch
	mmc-meson-gx-make-replace-warn_once-with-dev_warn_once-about-scatterlist-offset-alignment.patch
	mmc-sdhci-pci-gli-increase-1.8v-regulator-wait.patch
	powerpc-64s-syscall-fix-ptrace-syscall-info-with-scv-syscalls.patch
	powerpc-64s-syscall-use-pt_regs.trap-to-distinguish-syscall-abi-difference-between-sc-and-scv-syscalls.patch
	revert-mm-gup-check-page-posion-status-for-coredump.patch
	userfaultfd-hugetlbfs-fix-new-flag-usage-in-error-path.patch
	xen-pciback-reconfigure-also-from-backend-watch-handler.patch
	xen-pciback-redo-vf-placement-in-the-virtual-topology.patch