sparcv8leon3: add GR712RC target #935

Job	Run time
call-ci / build (armv7a7-imx6ull-evk)	1m 8s
call-ci / build (armv7a9-zynq7000-qemu)	1m 48s
call-ci / build (armv7a9-zynq7000-zedboard)	1m 21s
call-ci / build (armv7a9-zynq7000-zturn)	1m 40s
call-ci / build (armv7m4-stm32l4x6-nucleo)	1m 18s
call-ci / build (armv7m7-imxrt105x-evk)	1m 9s
call-ci / build (armv7m7-imxrt106x-evk)	2m 1s
call-ci / build (armv7m7-imxrt117x-evk)	1m 38s
call-ci / build (host-generic-pc)	1m 5s
call-ci / build (ia32-generic-pc)	1m 11s
call-ci / build (ia32-generic-qemu)	1m 4s
call-ci / build (riscv64-generic-qemu)	1m 26s
call-ci / build (riscv64-generic-spike)	1m 6s
call-ci / build (sparcv8leon3-gr716-mini)	1m 9s
call-ci / test EMU (armv7a9-zynq7000-qemu)	10m 54s
call-ci / test HW (armv7a7-imx6ull-evk)	5m 13s
call-ci / test EMU (host-generic-pc)	1m 20s
call-ci / test HW (armv7m7-imxrt106x-evk)	2m 13s
call-ci / test EMU (ia32-generic-qemu)	5m 9s
call-ci / test EMU (riscv64-generic-qemu)	2m 52s
call-ci / test HW (armv7m7-imxrt117x-evk)	3m 6s
call-ci / test HW (armv7a9-zynq7000-zedboard)	7m 47s
call-ci / test HW (armv7m4-stm32l4x6-nucleo)	7m 46s
call-ci / tests-summary	25s
call-ci / send-notification	0s
	1h 5m 49s

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