Update aarch64 feature detection #2285

Job	Run time
Check Style	14s
Build Documentation	1m 13s
Automatic intrinsic verification	26s
Build std_detect	1m 0s
Env Override (ubuntu-latest)	12s
Env Override (windows-latest)	34s
Test (i686-unknown-linux-gnu)	2m 0s
Test (x86_64-unknown-linux-gnu)	3m 40s
Test (x86_64-unknown-linux-gnu-emulated)	8m 59s
Test (arm-unknown-linux-gnueabihf)	1m 14s
Test (armv7-unknown-linux-gnueabihf)	10m 41s
Test (aarch64-unknown-linux-gnu)	21m 12s
Test (riscv64gc-unknown-linux-gnu)	1m 21s
Test (powerpc64le-unknown-linux-gnu)	3m 33s
Test (s390x-unknown-linux-gnu)	1m 33s
Test (wasm32-wasip1)	1m 21s
Test (i586-unknown-linux-gnu)	1m 48s
Test (nvptx64-nvidia-cuda)	24s
Test (thumbv6m-none-eabi)	12s
Test (thumbv7m-none-eabi)	13s
Test (thumbv7em-none-eabi)	13s
Test (thumbv7em-none-eabihf)	12s
Test (x86_64-apple-darwin)	6m 17s
Test (aarch64-apple-darwin)	51s
Test (x86_64-pc-windows-msvc)	6m 51s
Test (i686-pc-windows-msvc)	3m 9s
Test (aarch64-pc-windows-msvc)	1m 27s
Test (x86_64-pc-windows-gnu)	6m 49s
success	1s
	1h 27m 40s

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