Pull up following revision(s) (requested by tsutsui in ticket #1060):

sys/arch/sun3/sun3x/pmap.c: revision 1.117

Make sure pmap_kenter_pa(9) handles uncached mappings properly.

Fixes "cgfour(4) is mis-probed as bwtwo(4)" problem on 3/80
that has been broken since NetBSD 1.6.

Now Xorg 1.20 based Xsun 8bpp color server is confirmed working
on the cgfour(4).

Should be pulled up to netbsd-9.

XXX: all MD PMAP_NC flags should be replaced with MI PMAP_NOCACHE flag.

(martin)