Update the depencies of the .S files on assym.h; allows IP30 kernels to be built with -j2.
Update the depencies of the .S files on assym.h; allows IP30 kernels to be built
with -j2.

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars