4.19-stable patches

4.19-stable patches

added patches:
	fs-namespace.c-fix-mountpoint-reference-counter-race.patch
	iio-adc-stm32-adc-fix-sleep-in-atomic-context.patch
	iio-core-remove-extra-semi-colon-from-devm_iio_device_register-macro.patch
	iio-st_sensors-rely-on-odr-mask-to-know-if-odr-can-be-set.patch
	iio-xilinx-xadc-fix-adc-b-powerdown.patch
	iio-xilinx-xadc-fix-clearing-interrupt-when-enabling-trigger.patch
	iio-xilinx-xadc-fix-sequencer-configuration-for-aux-channels-in-simultaneous-mode.patch
	iio-xilinx-xadc-make-sure-not-exceed-maximum-samplerate.patch
	usb-add-usb_quirk_delay_ctrl_msg-and-usb_quirk_delay_init-for-corsair-k70-rgb-rapidfire.patch
	usb-core-fix-free-while-in-use-bug-in-the-usb-s-glibrary.patch
	usb-early-handle-amd-s-spec-compliant-identifiers-too.patch
	usb-hub-fix-handling-of-connect-changes-during-sleep.patch
	usb-sisusbvga-change-port-variable-from-signed-to-unsigned.patch