rp2350: Fix GlobalConfig for uart, rename func to match rp2040 #290

Job	Run time
Unit Test UF2 (macos-latest)	25s
Unit Test Regz (macos-latest)	28s
Unit Test Regz (ubuntu-latest)	19s
Unit Test Regz (windows-latest)	1m 57s
Unit Test UF2 (windows-latest)	1m 29s
Unit Test UF2 (ubuntu-latest)	17s
Build (ubuntu-latest)	31s
Check that stm32 generated code is up to date	38s
Build (windows-latest)	1m 7s
Build (macos-latest)	30s
Build Website	27s
Dry Run Packaging	2m 17s
Build Examples (espressif/esp)	2m 9s
Build Examples (microchip/avr)	2m 19s
Build Examples (nxp/lpc)	2m 1s
Build Examples (microchip/atsam)	1m 59s
Build Examples (wch/ch32v)	2m 18s
Build Examples (stmicro/stm32)	20s
Build Examples (gigadevice/gd32)	2m 9s
Build Examples (raspberrypi/rp2xxx)	2m 39s
Build Examples (nordic/nrf5x)	2m 6s
Unit Test Ports (macos-latest, raspberrypi/rp2xxx)	45s
Unit Test Ports (windows-latest, gigadevice/gd32)	1m 19s
Unit Test Ports (windows-latest, stmicro/stm32)	1m 22s
Unit Test Ports (macos-latest, gigadevice/gd32)	34s
Unit Test Ports (ubuntu-latest, raspberrypi/rp2xxx)	29s
Unit Test Ports (macos-latest, stmicro/stm32)	46s
Unit Test Ports (windows-latest, raspberrypi/rp2xxx)	1m 13s
Unit Test Ports (ubuntu-latest, stmicro/stm32)	19s
Unit Test Ports (ubuntu-latest, gigadevice/gd32)	16s
	35m 28s

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