fastboot: allow automatic detection of super location

Add "super" to the table of known images so that automatic file
resolution can occur.  Add a flag to indicate if the image should
be flashed with flashall and set it to false for the new "super"
image, all else true.

Test: 'fastboot flash super' works.
      'fastboot flashall' does not flash super
Bug: 78793464
Change-Id: I5b85536b1d4890264531af357aba84a061d6df44