drivers: serial: stm32: Consolidate UART config

Move overlapping UART parameter configuration to new
uart_stm32_parameters_set function. This function is called by
uart_stm32_configure upon application/subsystem configuration, and
uart_stm32_registers_configure upon (re-)initialization of driver
instances.

Signed-off-by: Kenneth J. Miller <ken@miller.ec>
1 file changed