[PATCH] image: let mksquashfs4 use all processors

[Felix Fietkau]

On 19.02.22 16:54, Stijn Tintel wrote:
> Drop the -processors argument from the mksquashfs4 call, so it will use
> all available processors. This dramatically reduces the time to create
> squashfs filesystems.
> 
> The times below are observed when building an image for my main router,
> the WatchGuard Firebox M300 (qoriq target):
> 
> Before:
> real    4m45,973s
> 
> After:
> real    0m23,497s
> 
> Signed-off-by: Stijn Tintel <stijn at linux-ipv6.be>
We need to verify that this doesn't break reproducible builds...

- Felix