At the Adafruit Metro M7 the pin GPIO_AD_13 is used for JTAG. Therefore
it is not configured for RTS at UART 2 and 3.
Signed-off-by: Nrobert-hh <robert@hammelrath.com>

Signed-off-by: N"Kwabena W. Agyeman" <kwagyeman@live.com>

This work was funded through GitHub Sponsors.
Signed-off-by: NJim Mussared <jim.mussared@gmail.com>

Change it into MICROPY_HW_USB_MANUFACTURER_STRING to be compatible with
other ports.

The RT1176 has two cores, but the actual firmware supports only the CM7.
There are currently no good plans on how to use the CM4.

The actual MIMXRT1170_EVK board is on par with the existing MIMXRT boards,
with the following extensions:
- Use 64 MB RAM for the heap.
- Support both LAN interfaces as LAN(0) and LAN(1), with LAN(1)
  being the 1GB interface.

The dual LAN port interface can eventually be adapted as well for the
RT1062 MCU.

This work was done in collaboration with @alphaFred.

This uses MP_REGISTER_ROOT_POINTER() to register all port-specific root
pointers in the mimxrt port.
Signed-off-by: NDavid Lechner <david@pybricks.com>

This commit adds support for machine.I2S on the mimxrt port.  The I2S API
is consistent with the existing stm32, esp32, and rp2 implementations.

I2S features:
- controller transmit and controller receive
- 16-bit and 32-bit sample sizes
- mono and stereo formats
- sampling frequencies from 8kHz to 48kHz
- 3 modes of operation:
  - blocking
  - non-blocking with callback
  - uasyncio
- configurable internal buffer
- optional MCK

Tested with the following development boards:
- MIMXRT1010_EVK, MIMXRT1015_EVK, MIMXRT1020_EVK, MIMXRT1050_EVK
- Teensy 4.0, Teensy 4.1
- Olimex RT1010
- Seeed ARCH MIX

Tested with the following I2S hardware peripherals:
- UDA1334
- GY-SPH0645LM4H
- WM8960 codec on board the MIMXRT boards and separate breakout board
- INMP441
- PCM5102
- SGTL5000 on the Teensy audio shield
Signed-off-by: NMike Teachman <mike.teachman@gmail.com>

The board.json file is intentionally excluded, until the board will be
sold. But including it into the mimxrt series make it easier to keep
the build up-to-date.