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MicroPython currently runs on core 0 of the esp32.  Calling
rmt_driver_install will mean that the RMT interrupt handler is also
serviced on core 0.  This can lead to glitches in the RMT output if
WiFi is enabled (for esp32.RMT and machine.bitstream).

This patch calls rmt_driver_install on core 1, ensuring that the RMT
interrupt handler is serviced on core 1.  This prevents glitches.

Fixes issue #8161.
Signed-off-by: Damien George <damien@micropython.org>