spidev: process arguments for raw command

[rminnich]

for the raw command, for each arg, dump arg size bytes to stdout.

Ryan, feel free to tell me this should be done differently/better :-)

I just did not want to lose these changes.

[10000TB]

BTW, not related to this change, but pflag seems to print out an error on spidev --help , which looks weird

xuehaohu@worldpeace:~$ spidev --help
Usage of spidev:
  -D, --device string   spidev device (default "/dev/spidev0.0")
  -s, --speed uint32    max speed in Hz (default 500000)
2024/05/15 13:04:58 Error: pflag: help requested
xuehaohu@worldpeace:~$

[rminnich]

Hi, I cleaned this up a bit, including getting rid of spf13 and the spew from the flag package. PTAL.

[codecov]

Codecov Report

Attention: Patch coverage is 72.00000% with 7 lines in your changes missing coverage. Please review.

Project coverage is 57.98%. Comparing base (5608ea9) to head (af22aa8).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2973      +/-   ##
==========================================
- Coverage   57.98%   57.98%   -0.01%     
==========================================
  Files         531      531              
  Lines       32934    32948      +14     
==========================================
+ Hits        19097    19104       +7     
- Misses      13837    13844       +7     

Flag	Coverage Δ
.-amd64	90.69% <ø> (ø)
cmds/...-amd64	46.76% <72.00%> (-0.02%)	⬇️
integration/generic-tests/...-amd64	19.80% <ø> (ø)
integration/generic-tests/...-arm	11.69% <ø> (ø)
integration/generic-tests/...-arm64	23.96% <ø> (ø)
integration/gotests/...-amd64	61.37% <ø> (-0.01%)	⬇️
integration/gotests/...-arm	62.54% <ø> (+0.15%)	⬆️
integration/gotests/...-arm64	62.63% <ø> (+<0.01%)	⬆️
pkg/...-amd64	58.56% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
everything	64.03% <72.00%> (-0.01%)	⬇️
cmds/exp	30.54% <ø> (ø)