Stm32f7 disco boards benefit from dedicated openocd board target.
Use these target as the generic stm32f7discovery one will be
eventually removed.
Additionally, replace now deprecated 'adapter_khz' by 'adapter speed'.
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
This patch adds basic support and documentation for the STM32F723E-DISCO
board, with GPIO, USART, I2C and USB support. Two USARTs are enabled,
the VCP one for the console and the Arduino one. The GPIOs are
configured for the 3 LEDs and the button available on the board.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>