PICO.mk updates, tidy-ups, allow for PICO_trace
platform_mcu.h #include "pico.h" rather than messing around with addressmap.h (can do
since including as system headers now).
PICO/target/RP2350[AB]/target.h undef USE_MSP_DISPLAYPORT because won't compile debug
when USE_MSP_DISPLAYPORT defined without USE_OSD.
* PICO changes
* Spelling corrected in API v2
* Corrected as per @ledvinap - granted will be generated in future.
* As per @tstibor
* Correction and comment as per @ledvinap
* Adding common source location in ./src/platform
To enable the continued clean up of multiple files still in ./src/main/driver (more PRs to follow) that are specifically for AT32, APM32 and STM32
Source will be moved to MCU_COMMON_SRC where it is specifically for that MCU (or variant). The test will be to ensure no files in the MCU_EXCLUDES for SITL.
* Use of +=
