4.19-stable patches

4.19-stable patches

added patches:
	clk-uniphier-fix-fixed-rate-initialization.patch
	coresight-fix-trcconfigr.qe-sysfs-interface.patch
	documentation-add-link-to-stable-release-candidate-tree.patch
	documentation-update-stable-tree-link.patch
	f2fs-fix-to-unlock-page-correctly-in-error-path-of-is_alive.patch
	iio-afe-rescale-use-s64-for-temporary-scale-calculations.patch
	iio-inkern-apply-consumer-scale-on-iio_val_int-cases.patch
	iio-inkern-apply-consumer-scale-when-no-channel-scale-is-available.patch
	iio-inkern-make-a-best-effort-on-offset-calculation.patch
	nfsd-prevent-integer-overflow-on-32-bit-systems.patch
	nfsd-prevent-underflow-in-nfssvc_decode_writeargs.patch
	pinctrl-samsung-drop-pin-banks-references-on-error-paths.patch
	ptrace-check-ptrace_o_suspend_seccomp-permission-on-ptrace_seize.patch
	serial-sc16is7xx-clear-rs485-bits-in-the-shutdown.patch
	sunrpc-avoid-race-between-mod_timer-and-del_timer_sync.patch