[PATCH] powerpc: Add run_cmd function to boot wrapper

[Michael Ellerman]

On Mon, 2015-10-19 at 10:53 -0700, Geoff Levand wrote:

> Add a boot wrapper script function run_cmd which will run a shell command
> quietly and only print the output if either V=1 or an error occurs.
> 
> Also, run the ps3 dd commands with run_cmd to clean up the build output.
> 
> Signed-off-by: Geoff Levand <geoff at infradead.org>
> ---
> Hi Michael,
> 
> How about something like this?  It seems a little cleaner.

Yeah great that's nice, I'll take it.

cheers