Seems the bcmwl package is looking for kernel autoconf.h in the wrong
place.
Try (as root):
ln -s /usr/src/linux-headers-`uname -r`/include/generated/autoconf.h
/usr/src/linux-headers-`uname -r`/include/linux/autoconf.h
and then update again.
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You received this bug notification because you
*** This bug is a duplicate of bug 580594 ***
https://bugs.launchpad.net/bugs/580594
Thank you for taking the time to report this bug and helping to make
Ubuntu better. This particular bug has already been reported and is a
duplicate of bug 580594, so it is being marked as such. Please look