STM32 uart Kconfig instance flags were not following same naming scheme than other drivers (i2c, spi, ..) Update driver to use UART_X instead of UART_STM32_PORT_X Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
Olimex STM32-E407 is very similar and got used as template. Signed-off-by: Reto Schneider <code@reto-schneider.ch>