Instead of calling DMA_Init to set up everything it's possible sometimes to
just call DMA_CalcBaseAndBitshift, so make the latter public.

Instead of calling DMA_Init to set up everything it's possible sometimes to
just call DMA_CalcBaseAndBitshift, so make the latter public.

The definition of NULL is the only reason stdio.h is needed, and including
this standard header clashes with a CC3000 driver's definitions because
the latter wants to redefine built-in macros.  The patch here is the
simplest way to deal with this but the proper fix is really to modify the
CC3000 driver.

From https://github.com/STMicroelectronics/STM32CubeWB.git tag v1.10.0

Signed-off-by: Damien George <damien@micropython.org>

From https://github.com/STMicroelectronics/STM32CubeWB.git tag v1.6.0

Signed-off-by: Damien George <damien@micropython.org>

These files come from the corresponding Cube HAL archive.