[yocto] build a toolchain compiler with ARM hard-float support

[Lennart Sorensen]

On Thu, Sep 29, 2016 at 08:17:47AM -0500, Mark Hatle wrote:
> The machine configuration file should be setting the 'DEFAULTTUNE' variable to
> an appropriate ISA and ABI (hard float) for your configuration.  If it is not,
> you may have to create your own variant and change the DEFAULTTUNE setting --
> assuming the board supports the necessary hard float components.  (And yes,
> there are some armv7a variants that people removed the VFP instructions from --
> even though it's theoretically against spec.)

ARM says the Cortex-A5 and A9 are both optional VFP, so I don't think
it is against the spec in any way.

-- 
Len Sorensen