How can I apply a patch to a gcc resides in Qnx ?

Xilinx has Posted a toolchain that should address the board i'm using :
ppc405 with hardware FPU support through APU Interface.

http://www.xilinx.com/guest_resources/gnu
The GPL GNU Source (9.2i Release).

I've downloaded their toolchain but i want to use it with Qnx gcc ,
inorder to be able to run Qnx on that board and use hardware FPU.

There is a bunch of pathces in the above toolchain that i want to apply to the gcc in Qnx .