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To support deplop-openocd on target boards that use TEXT0_ADDR only and
have their firmware in a single binary image.

Following an equivalent fix to py/bc.c.  The reason the incorrect values
for the opcode constants were not previously causing a bug is because they
were never being used: these opcodes always have qstr arguments so the part
of the code that was comparing them would never be reached.

Thanks to @malinah for finding the problem and providing the initial patch.

All 4 opcodes that can have caching bytes also have qstrs, so the test for
them must go in the qstr part of the code.  The reason this incorrect
calculation of the opcode size did not lead to a bug is because the caching
byte is at the end of the opcode (byte, qstr, qstr, cache) and is always
0x00 when saving/loading, so was just treated as a single byte no-op
opcode.  Hence these opcodes were being saved/loaded/decoded correctly.

Thanks to @malinah for finding the problem and providing the initial patch.

On by default, turned off for minimal/bare-arm. Saves 144 bytes on x86.

Due to new webpages at nordicsemi.com, the download links
for Bluetooth LE stacks were broken.

This patch updates the links to new locations for the current
targets.

The docs are now built as one for all ports.

A static UART is useful for internal peripherals that require a UART and
need to persist outside the soft-reset loop.

To provide a cleaner and more abstract C-level interface to the UART.

The HAL just clears UE and then clears all the UART control registers.

This UART_HandleTypeDef is quite large (around 70 bytes in RAM needed for
each UART object) and is not needed: instead the state of the peripheral
held in its registers provides all the required information.

mp_obj_new_exception_msg() assumes that the message passed to it is in ROM
and so can use its data directly to create the string object for the
argument of the exception, saving RAM.  At the same time, this approach
also makes sure that there is no attempt to format the message with printf,
which could lead to faults if the message contained % characters.

Fixes issue #3004.

SHORT, INT, LONG, LONGLONG, and unsigned (U*) variants are being defined.
This is done at compile using GCC-style predefined macros like
__SIZEOF_INT__.  If the compiler doesn't have such defines, no such types
will be defined.

Allows to get address a pointer contains, as an integer.

Based on the discussion, this special method is available unconditionally,
as converting to int is a common operation.

Instead of assuming that the method is a bytecode object, and only
supporting load of __name__, make the operation generic by delegating the
load to the method object itself.  Saves a bit of code size and fixes the
case of attempting to load __name__ on a native method, see issue #4028.

Fixes issue #4273.

The uart_write_bytes_with_break() function requires non-zero data to be
sent before the break, so a standalone break must be synthesised.

The L432 does not have: GPIOD, TIM3, SPI2, ADC dual mode operation, 2-banks
flash.

The pin alternate function information is derived from ST's datasheet
https://www.st.com/resource/en/datasheet/stm32l432kc.pdf
In the datasheet, the line 2 of AF4 includes I2C2 but actually the chip
does not have I2C2 so it is removed.

As per the machine.UART documentation, this is used to set the length of
the UART RX buffer.