[PATCH RFC 4/6] arm64: support reuse-cmdline option

[Geoff Levand]

On Thu, 2015-04-16 at 22:17 +0530, Pratyush Anand wrote:
> --reuse-cmdline uses cmdline argument of primary kernel. Support this
> feature for ARM64.

Looks OK, I'll add this to my arm64 series.

-Geoff