Fix support for single-bank stm32l4 processors
Recent patches for STM32L4+ assumed all STM32L4 processors have a dual-
bank option. This is not the case for STM32L4{3,4,5,6}xx processors and
therefore, these processors (like STM32L433) failed when attempting to
flash the second half of the flash memory. This patch fixed this issue.
Tested on STM32L433xC, STM32L476xG and STM32L471xG.
Change-Id: I8262ba4f05190802c5868d753f3e7af50e581811
Signed-off-by: Armin van der Togt <armin@otheruse.nl>
Reviewed-on: http://openocd.zylin.com/4913
Tested-by: jenkins
Reviewed-by: Peter Tettelaar <peter@float-iot.nl>
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-by: Mark Schulte <mschulte@lyft.com>