problem building bcm235-rpi-b.dtb

[Vince Weaver]

Hello

I built the current bcm2835-next git kernel and it built fine.

But then I tried to build the dtb file and I can't seem to make it happen.
Regular make didn't build it, and if I try to make it manually
 
$ make  bcm235-rpi-b.dtb
 make  bcm235-rpi-b.dtb
make[1]: *** No rule to make target `arch/arm/boot/dts/bcm235-rpi-b.dtb'.  
Stop.
make: *** [bcm235-rpi-b.dtb] Error 2

am I missing something?  I'm building things natively on an actual pi, not 
cross compiling.

Thanks,

Vince