Add board config for OSUMGP-RP2040 (#1095) #3410

Job	Run time
call-node-workflow / build	26s
build (ARCController)	2m 19s
build (Blank)	2m 7s
build (Pico)	2m 7s
build (PicoW)	2m 25s
build (BentoBox)	2m 31s
build (ergoSHIFTRev2)	2m 19s
build (FightboardV3)	2m 19s
build (FightboardV3Mirrored)	2m 8s
build (FlatboxRev4)	2m 7s
build (FlatboxRev5)	2m 6s
build (FlatboxRev5RGB)	2m 13s
build (FlatboxRev5USBPassthrough)	2m 5s
build (FlatboxRev5Southpaw)	2m 12s
build (Granola)	2m 11s
build (KB2040)	2m 8s
build (KeyboardConverter)	2m 9s
build (Haute42COSMOX)	2m 21s
build (Liatris)	2m 10s
build (MavercadeRev1)	2m 11s
build (MavercadeRev2)	2m 8s
build (MiSTercadeV2)	2m 14s
build (OpenCore0)	2m 19s
build (OpenCore0WASD)	2m 9s
build (OSUMGP-RP2040)	2m 7s
build (PicoAnn)	2m 16s
build (PicoFightingBoard)	2m 8s
build (RanaTadpole)	2m 13s
build (ReflexCtrlGenesis6)	2m 9s
build (ReflexCtrlNES)	2m 21s
build (ReflexCtrlSaturn)	2m 15s
build (ReflexCtrlSNES)	2m 25s
build (ReflexCtrlVB)	2m 11s
build (ReflexEncodeV1.2)	2m 23s
build (ReflexEncodeV2.0)	2m 18s
build (RP2040AdvancedBreakoutBoard)	2m 14s
build (RP2040AdvancedBreakoutBoardUSBPassthrough)	2m 19s
build (RP2040MiniBreakoutBoard)	2m 9s
build (SparkFunProMicro)	2m 24s
build (WaveshareZero)	2m 8s
build (Stress)	2m 10s
build (SGFDevices)	2m 9s
build (ZeroRhythm)	2m 6s
	1h 33m 49s

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