zynq7000-flash: initialize configuration registers #1026

Job	Run time
call-ci / build (armv7a7-imx6ull-evk)	1m 22s
call-ci / build (armv7a9-zynq7000-qemu)	2m 3s
call-ci / build (armv7a9-zynq7000-zedboard)	1m 37s
call-ci / build (armv7a9-zynq7000-zturn)	1m 41s
call-ci / build (armv7m4-stm32l4x6-nucleo)	1m 14s
call-ci / build (armv7m7-imxrt106x-evk)	2m 8s
call-ci / build (armv7m7-imxrt117x-evk)	2m 0s
call-ci / build (host-generic-pc)	1m 26s
call-ci / build (ia32-generic-pc)	1m 39s
call-ci / build (ia32-generic-qemu)	1m 40s
call-ci / build (riscv64-generic-qemu)	1m 21s
call-ci / build (riscv64-generic-spike)	1m 40s
call-ci / run tests on hardware (armv7a7-imx6ull-evk)	27s
call-ci / run tests on hardware (armv7m7-imxrt106x-evk)	24s
call-ci / run tests on hardware (armv7m7-imxrt117x-evk)	38s
call-ci / run tests on hardware (armv7a9-zynq7000-zedboard)	25s
call-ci / run tests on hardware (armv7m4-stm32l4x6-nucleo)	20s
call-ci / run tests on emulators (armv7a9-zynq7000-qemu)	35m 20s
call-ci / run tests on emulators (host-generic-pc)	57s
call-ci / run tests on emulators (ia32-generic-qemu)	4m 4s
call-ci / notify ci team using e-mail	2s
	1h 2m 28s

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