Grub, sparc64, and compressed kernels

[Chris Ross <cross+debian@distal.com>]

As I was mentioning in other threads, I was getting grub installed onto the
"normal" sun-labeled ext2/4 partitioned disk in my T5120.  Working with
Eric (https://github.com/esnowberg/grub2-sparc/issues/14) he helped me
figure out that grub wasn't working because the kernel in /boot was gzip'd.

Is there something that's told Debian that I want my kernels in /boot to be
gzip'd?  Is there a way to make it _not_ do that, since grub apparently
needs them not to be gzip'd on this machine?

Thanks.

         - Chris