[PATCH] qe: add function qe_clock_source

[Scott Wood]

Kumar Gala wrote:
> Ok, I went and looked at how rx-clock & tx-clock are spec'd in  
> booting-without-of.txt
> 
> Why dont we fix this so we have a property that says "BRG" or "CLK"  
> and another that has ID = [1.16] for BRG and [1..24] for CLK.

Or we could keep it as it is, check the beginning of the string for 
"BRG" or "CLK", and binarize the number that follows.

Or we could just stop putting CLK information in the device tree. :-)

-Scott