sigrok-fwextract-kingst-la2016: extract more blobs (all of them)

sigrok-fwextract-kingst-la2016: extract more blobs (all of them)

The previous implementation exclusively extracted the 01a2 MCU firmware
and the LA1016 and LA2016 FPGA bitstreams. The sigrok device driver
already supports more devices, and may easily support even more similar
devices when their firmware becomes available. Simplify users' reports
for currently unsupported devices by just extracting all blobs from the
KingstVis executable. This eliminates the necessity to manipulate the
extractor script (including regexes), raising the application's diag
verbosity is sufficient. Users decide how many of the extracted blobs
they copy to the firmware directory, keeping unused files is non-fatal.