* Add instructions for pre-built binaries

WIP: Add some initial instructions for flashing the board using the production firmware. Taking a pause to save my work. I need to figure out how I can download from the command-line, rather than the web browser so these instructions don't have to change drastically.

commit c761ac17
Author: Deepak Khatri <lorforlinux@beagleboard.org>
Date:   Mon Nov 14 01:19:14 2022 +0530

    Table rotation and font size change

commit 216bdb44
Author: Deepak Khatri <lorforlinux@beagleboard.org>
Date:   Mon Nov 14 01:18:26 2022 +0530

    Fix ref link

commit 4ebaf63b
Author: Deepak Khatri <lorforlinux@beagleboard.org>
Date:   Sun Nov 13 23:51:45 2022 +0530

    Update BeagleBone Black headerpin table font size

commit 168c12e9
Author: Deepak Khatri <lorforlinux@beagleboard.org>
Date:   Sun Nov 13 23:39:01 2022 +0530

    Add GNU FreeFont

commit 5389ee61
Author: Deepak Khatri <lorforlinux@beagleboard.org>
Date:   Sun Nov 13 23:32:42 2022 +0530

    Fix font package name

commit 751f9df9
Author: Deepak Khatri <lorforlinux@beagleboard.org>
Date:   Sun Nov 13 23:3...