The xC tag in the SoC reference indicates the flash size, use it in the
configuration to permit selection of correct flash size for dts.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Add configuration, dts and documentation for the Nucleo L432KC board
based on the STM32L432KC SoC.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>