Make PA ramp up time configurable for SX1262 #1121

Job	Run time
esp-build	4m 40s
rpi-build	57s
arduino:avr:uno	4m 24s
arduino:avr:mega	21s
rpi-pico-build	1m 2s
tock-build	1m 49s
arduino:mbed:nano33ble	8s
arduino:mbed:envie_m4	6s
arduino:megaavr:uno2018	8s
arduino:sam:arduino_due_x	16s
arduino:samd:arduino_zero_native	8s
adafruit:samd:adafruit_feather_m0	8s
adafruit:nrf52:feather52832	8s
esp32:esp32:esp32	7s
esp8266:esp8266:generic	12s
SparkFun:apollo3:sfe_artemis	6s
STMicroelectronics:stm32:GenF3:pnum=BLACKPILL_F303CC	9s
STMicroelectronics:stm32:Nucleo_64:pnum=NUCLEO_WL55JC1	6s
stm32duino:STM32F1:mapleMini	5s
MegaCoreX:megaavr:4809	5s
arduino:mbed_rp2040:pico	8s
rp2040:rp2040:rpipico	7s
CubeCell:CubeCell:CubeCell-Board	8s
MegaCore:avr:1281	7s
teensy:avr:teensy41	5s
arduino:renesas_uno:minima	5s
rpi-test	8s
	15m 53s

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