[PATCH v2 3/8] arm64: Add hardware prefetch control support for ARM64

[tarumizu.kohei at fujitsu.com]

> This has nothing to do with arm64 arch other than you access registers as sysregs.
> That's not enough of a reason to put in arch/arm64. Move this to drivers/
> assuming it continues. I agree that this seems questionable to expose to
> userspace in the first place...

I move it under drivers/ in the next version.