Cherry-pick to master: [rom, rom_ext] Enable pull-up on UART_RX #3670

Job	Run time
Lint (quick)	3m 9s
Build documentation	5m 1s
Airgapped build	7m 47s
Lint (slow)	11m 9s
Verible lint	1m 0s
Build Docker Containers	2m 59s
CW305's Bitstream	21m 33s
Run OTBN crypto tests	22m 2s
Run OTBN smoke Test	2m 41s
Verilated English Breakfast	8m 2s
Verilated Earl Grey	1h 27m 29s
Build and test software	15m 26s
Earl Grey for CW310 / Build bitstream	1h 5m 44s
Earl Grey for CW310 Hyperdebug / Build bitstream	1h 13m 10s
Earl Grey for CW340 / Build bitstream	1h 25m 50s
CW310 Test ROM Tests / FPGA test	3m 37s
CW310 ROM Tests / FPGA test	41m 27s
CW310 SiVal ROM_EXT Tests / FPGA test	33m 34s
CW310 SiVal Tests / FPGA test	25m 15s
CW310 Manufacturing Tests / FPGA test	30m 24s
CW310 ROM_EXT Tests / FPGA test	7m 17s
Cache bitstreams to GCP	0s
CW340 Test ROM Tests / FPGA test	3m 23s
CW340 ROM_EXT Tests / FPGA test	6m 45s
CW340 ROM Tests / FPGA test	46s
CW340 SiVal Tests / FPGA test	17m 37s
CW340 SiVal ROM_EXT Tests / FPGA test	4m 43s
CW340 Manufacturing Tests / FPGA test	38m 17s
Verify FPGA jobs	27s
	10h 26m 34s

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