[RFC PATCH 13/16] clk: hifiberry-dacpro: add "sclk" lookup

[Pierre-Louis Bossart]

>> +       proclk->sclk_lookup = clkdev_hw_create(&proclk->hw, "sclk", NULL);
>> +       if (!proclk->sclk_lookup) {
>> +#ifndef CONFIG_ACPI
> 
> Is it to save code space? Otherwise the ifdefs are pretty ugly and I'd
> prefer we just call of_clk APIs and rely on the inline stubs when
> CONFIG_OF isn't enabled to be optimized out.

CONFIG_OF was added as a dependency (see patch 10/16) so that we can use 
the 'compatible' string to probe w/ the PRP0001 device.

I must admit I don't know what these functions do so I just filtered 
them out in the ACPI case.

>> +               of_clk_del_provider(dev->of_node);
>> +#endif
>> +               return -ENOMEM;
>> +       }
>> +