mraa-gpio: return proper error codes#1130

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rurban wants to merge 3 commits intoeclipse-mraa:masterfrom

Commits on Jun 10, 2024

led: print full brightness device paths on errors
Reini Urban
committed
mraa-gpio: return proper error codes
Reini Urban
committed

Commits on Nov 12, 2024

fix compiler warnings, check returns
Reini Urban
committed