[PATCH] tile: various console improvements

[Greg Kroah-Hartman]

On Tue, Aug 06, 2013 at 02:11:21PM -0400, Chris Metcalf wrote:
> This change improves and cleans up the tile console.
> 
> - We enable HVC_IRQ support on tilegx, with the addition of a new
>   Tilera hypervisor API for tilegx to allow a console IPI.  If IPI
>   support is not available we fall back to the previous polling mode.
> 
> - We simplify the earlyprintk code to use CON_BOOT and eliminate some
>   of the other supporting earlyprintk code.
> 
> - A new tile_console_write() primitive is used to send output to
>   the console and is factored out of the hvc_tile driver.
>   This lets us support a "sim_console" boot argument to allow using
>   simulator hooks to send output to the "console" as a slightly
>   faster alternative to emulating the hardware more directly.
> 
> Signed-off-by: Chris Metcalf <cmetcalf at tilera.com>

Acked-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>