[XS] Change in flashrom[master]: meson: improve error message for unsupported systems

[Peter Marheine (Code Review)]

Attention is currently required from: Anastasia Klimchuk, Miklós Márton, Thomas Heijligen.

Peter Marheine has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/75490?usp=email )

Change subject: meson: improve error message for unsupported systems
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Patch Set 4:

(1 comment)

Commit Message:

https://review.coreboot.org/c/flashrom/+/75490/comment/c6c37e6f_4cb791f6 :
PS3, Line 9: This adds the current and supported system information to the error message
           : when an unsupported programmer is requested, making it easier to tell what
           : the incompatibility is.
           : 
           : TEST=(in mingw-ucrt64) meson setup -Dprogrammer=ni845x_spi build,
           :      error message says the programmer needs `['windows']/['x86']` but the
           :      system is `windows/x86_64`.
> Can you wrap this at 72 chars? Thanks!

Done