rp2350: Fix GlobalConfig for uart, rename func to match rp2040 #291

Job	Run time
Unit Test UF2 (ubuntu-latest)	18s
Unit Test UF2 (macos-latest)	27s
Unit Test Regz (macos-latest)	42s
Unit Test Regz (windows-latest)	1m 20s
Unit Test Regz (ubuntu-latest)	19s
Unit Test UF2 (windows-latest)	1m 21s
Check that stm32 generated code is up to date	44s
Unit Test Ports (macos-latest, stmicro/stm32)	34s
Unit Test Ports (windows-latest, gigadevice/gd32)	1m 14s
Build Examples (microchip/avr)	2m 12s
Build (windows-latest)	1m 10s
Unit Test Ports (windows-latest, stmicro/stm32)	1m 7s
Build (macos-latest)	39s
Unit Test Ports (windows-latest, raspberrypi/rp2xxx)	1m 10s
Build Examples (microchip/atsam)	2m 2s
Unit Test Ports (macos-latest, gigadevice/gd32)	38s
Dry Run Packaging	46s
Build Examples (raspberrypi/rp2xxx)	2m 39s
Build (ubuntu-latest)	22s
Build Examples (stmicro/stm32)	24s
Unit Test Ports (ubuntu-latest, stmicro/stm32)	16s
Build Examples (nordic/nrf5x)	2m 0s
Build Examples (wch/ch32v)	2m 23s
Build Examples (nxp/lpc)	1m 59s
Unit Test Ports (ubuntu-latest, gigadevice/gd32)	16s
Unit Test Ports (macos-latest, raspberrypi/rp2xxx)	46s
Build Examples (espressif/esp)	2m 22s
Build Website	27s
Build Examples (gigadevice/gd32)	2m 20s
Unit Test Ports (ubuntu-latest, raspberrypi/rp2xxx)	31s
	33m 28s

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