The NetBSD bootloader attempts to load NetBSD kernel modules for
"unusual" file systems. We do not support NetBSD kernel modules,
and thus, the bootloader gives us warnings about not being able
to load them, in particular when booting CD images. This patch
disables the NetBSD file system module autoload feature.
Change-Id: I55fce53b4bb0282b7d8a005192200fe466312f62
1d80a87694