[PATCH] backlight: pwm_bl: Do not make the regulator mandatory

[Shawn Guo]

On Fri, Nov 22, 2013 at 02:52:24PM +0000, Mark Brown wrote:
> On Fri, Nov 22, 2013 at 03:22:32PM +0100, Thierry Reding wrote:
> 
> > Cc'ing Mark Brown, perhaps he can help figure out what's causing this.
> 
> The obvious question is what kernel this is being tested on...

Hmm, I'm seeing this breakage on v3.13-rc1 now with the following line
in the kernel log.

  pwm-backlight backlight.18: dummy supplies not allowed

What's missing here?

Shawn