1. add check in the gdma driver, to prevent multiple channels connecting
to the same peripheral
2. memory copy DMA ID will occupy the peripheral's DMA ID on some ESP
targets (e.g. esp32c3/s3). We should search for a free one when
install async memcpy driver.
Closes https://github.com/espressif/esp-idf/issues/10575
A part of the test 'Can allocate IRAM int only with an IRAM handler' was to
allocate an intr with the handler in RTC memory which is not supported by esp32c2.
A condition was added to prevent this part of the test to execute on esp32c2 targets.
- Support SOC ROOT clock source switch
- Support CPU frequency change
- Support RTC SLOW clock source switch
- Support RTC SLOW clock + RC FAST calibration
Remove FPGA build for esp32c6
morris