In this particular case it'd be just as easy to simply make the change by hand. Just edit
Change the two lines indicated in the patch, then rebuild your kernel. A "-" in the first position indicates deletion of the line. A "+" indicates addition of the line.
On the other hand, if you really want to apply the patch, navigate to your kernel source directory and execute
patch -p1 < path_to_patch_file
Then rebuild your kernel.