Always disable UART poll sleep

[vintagepc]

Description

Disables UART poll sleeping

Behaviour/ Breaking changes

Speeds up the bootloader and other poll loops, at the expense of CPU usage and a tighter spinloop

Linked issues:

• Closes #356

[vintagepc]

the IOCTL is just a means of selecting/interacting with a named device via a macro that constructs the internal name used by SimAVR.

I fully expect this will break the timing on some tests that will need fixing...

[codecov[bot]]

Codecov Report

Merging #357 (3077f47) into master (6355af9) will increase coverage by 0.01%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #357      +/-   ##
==========================================
+ Coverage   91.43%   91.45%   +0.01%     
==========================================
  Files         167      167              
  Lines        7792     7793       +1     
==========================================
+ Hits         7125     7127       +2     
+ Misses        667      666       -1     

Impacted Files	Coverage Δ
parts/components/uart_pty.h	100.00% <ø> (ø)
parts/Board.cpp	80.53% <100.00%> (ø)
parts/boards/EinsyRambo.cpp	96.57% <100.00%> (ø)
parts/boards/MiniRambo.cpp	98.11% <100.00%> (ø)
parts/components/uart_pty.cpp	81.36% <100.00%> (+0.86%)	:arrow_up:
utility/Config.h	100.00% <0.00%> (ø)

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