[aur-general] Merge request: broadcom-wl-dkms, wireless-bcm43142-dkms, broadcom-wl6-dkms

To clean up the naming and confusion around the various DKMS Broadcom drivers out on AUR, please perform the following: * merge the comments, history, etc. from wireless-bcm43142-dkms into broadcom-wl-dkms * merge the comments, history from broadcom-wl6-dkms into broadcom-wl-dkms This means that those three packages should now be just one: broadcom-wl-dkms. The current PKGBUILD of broadcom-wl-dkms is already the latest, so going forward that is the maintained version. Thanks!