time: implement clock_settime #1145

Job	Run time
call-ci / build (armv7a7-imx6ull-evk)	1m 4s
call-ci / build (armv7a9-zynq7000-qemu)	1m 12s
call-ci / build (armv7a9-zynq7000-zedboard)	58s
call-ci / build (armv7a9-zynq7000-zturn)	1m 12s
call-ci / build (armv7m4-stm32l4x6-nucleo)	1m 3s
call-ci / build (armv7m7-imxrt105x-evk)	1m 20s
call-ci / build (armv7m7-imxrt106x-evk)	1m 10s
call-ci / build (armv7m7-imxrt117x-evk)	1m 14s
call-ci / build (host-generic-pc)	1m 1s
call-ci / build (ia32-generic-pc)	1m 0s
call-ci / build (ia32-generic-qemu)	1m 4s
call-ci / build (riscv64-generic-qemu)	52s
call-ci / build (riscv64-generic-spike)	54s
call-ci / build (sparcv8leon3-gr716-mini)	52s
call-ci / test EMU (armv7a9-zynq7000-qemu)	8m 32s
call-ci / test HW (armv7a7-imx6ull-evk)	6m 19s
call-ci / test EMU (host-generic-pc)	46s
call-ci / test HW (armv7m7-imxrt106x-evk)	2m 32s
call-ci / test EMU (ia32-generic-qemu)	6m 20s
call-ci / test HW (armv7m7-imxrt117x-evk)	2m 53s
call-ci / test EMU (riscv64-generic-qemu)	5m 14s
call-ci / test HW (armv7a9-zynq7000-zedboard)	6m 38s
call-ci / test HW (armv7m4-stm32l4x6-nucleo)	11m 8s
call-ci / tests-summary	17s
call-ci / send-notification	0s
	1h 5m 35s

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