cpufreq: mediatek: allow modular build

[Arnd Bergmann]

On Friday 11 September 2015 13:55:36 Viresh Kumar wrote:
> On 11-09-15, 10:22, Arnd Bergmann wrote:
> > In my approach, I decided to allow the driver to be a module, as that
> > seems nicer for multi_v7_defconfig, but I now see that there are
> > several other drivers that can only be built-in, so if we decided to
> > make that the general strategy we should change them all.
> 
> And we need to do that with a proper module_exit() function, otherwise
> we are really adding a BUG. Which you just did with your patch 

I don't consider that a bug: a module with just an init function and
no exit function can be loaded once and never unloaded, which is not
nice for debugging, but is otherwise fully functional.

	Arnd