powerpc: Add run_cmd function to boot wrapper

[Michael Ellerman]

On Mon, 2015-19-10 at 17:53:26 UTC, 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>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/879c26d4f6a2b573d75cc235

cheers