sha2

sha2: RISC-V scalar crypto extension support #1185

Job	Run time
riscv32-zknh	39s
riscv64-zknh	1m 30s
minimal-versions / minimal-versions	1m 5s
set-msrv / set-msrv	3s
build (1.79.0, thumbv7em-none-eabi)	31s
linux (i686-unknown-linux-gnu, 1.79.0, sudo apt update && sudo apt install gcc-multilib)	1m 19s
build (1.79.0, wasm32-unknown-unknown)	40s
macos (1.79.0)	34s
linux (i686-unknown-linux-gnu, stable, sudo apt update && sudo apt install gcc-multilib)	1m 27s
cross (1.79.0, aarch64-unknown-linux-gnu, default)	39s
macos (stable)	36s
build (1.79.0, loongarch64-unknown-linux-gnu)	22s
linux (x86_64-unknown-linux-gnu, 1.79.0)	1m 0s
build (stable, thumbv7em-none-eabi)	28s
linux (x86_64-unknown-linux-gnu, stable)	1m 9s
build (stable, wasm32-unknown-unknown)	28s
build (stable, loongarch64-unknown-linux-gnu)	19s
windows (1.79.0, x86_64-pc-windows-gnu)	51s
windows (stable, x86_64-pc-windows-gnu)	1m 41s
cross (1.79.0, powerpc-unknown-linux-gnu, default)	44s
cross (stable, aarch64-unknown-linux-gnu, default)	45s
cross (stable, powerpc-unknown-linux-gnu, default)	32s
	17m 22s

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