DragonFlyBSD/src 5a31d99. Makefile_upgrade.inc, etc devd.conf

Clean up the USB driver directories, remove unbuilt source.

Remove old source that has not (yet) been ported. If any of these
drivers would get ported in the future, it would be from current
FreeBSD source anyway. Keeping the old source around just confuses
when grepping in /usr/src.
DeltaFile
+0-4,430sys/bus/u4b/wlan/if_urtw.c
+0-2,920sys/bus/u4b/wlan/if_zyd.c
+0-2,899sys/bus/u4b/wlan/if_uath.c
+0-2,397sys/bus/u4b/wlan/if_upgt.c
+0-2,271sys/bus/u4b/wlan/if_ural.c
+0-2,233sys/bus/u4b/input/atp.c
+0-1,910sys/bus/u4b/net/uhso.c
+0-1,730sys/bus/u4b/usb_compat_linux.c
+0-1,588sys/bus/u4b/net/if_usie.c
+0-1,313sys/bus/u4b/wlan/if_zydreg.h
+0-1,144sys/bus/u4b/wlan/if_zydfw.h
+0-1,097sys/bus/u4b/video/udl.c
+0-915sys/bus/u4b/net/if_rue.c
+0-857sys/bus/u4b/misc/udbp.c
+0-601sys/bus/u4b/wlan/if_uathreg.h
+0-482sys/bus/u4b/wlan/if_upgtvar.h
+0-432sys/bus/u4b/wlan/if_urtwreg.h
+0-311sys/bus/u4b/video/udl.h
+0-310sys/bus/u4b/usb_compat_linux.h
+0-256sys/bus/u4b/net/if_usievar.h
+0-245sys/bus/u4b/wlan/if_uathvar.h
+0-211sys/bus/u4b/wlan/if_uralreg.h
+0-186sys/bus/u4b/wlan/if_urtwvar.h
+0-178sys/bus/u4b/net/if_ruereg.h
+0-146etc/devd/uath.conf
+0-134sys/bus/u4b/wlan/if_uralvar.h
+0-114sys/dev/misc/ipmi/ipmi_linux.c
+0-80sys/bus/u4b/misc/udbp.h
+0-8sys/dev/misc/ipmi/ipmi_linux/Makefile
+0-5share/man/man4/usb.4
+0-5share/man/man4/wlan.4
+2-2etc/devd.conf
+0-3share/man/man4/miibus.4
+0-2sys/dev/misc/ipmi/Makefile
+0-2usr.sbin/802_11/wpa_supplicant/wpa_supplicant.8
+1-1sys/bus/u4b/net/Makefile
+0-2sys/boot/dloader/loader.conf
+0-2sys/boot/dloader/loader-bootp.conf
+0-2share/man/man4/wlan_amrr.4
+0-2share/man/man4/Makefile
+1-1etc/devd/Makefile
+0-2sys/bus/u4b/usb/Makefile
+1-0Makefile_upgrade.inc
+5-31,42943 files

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