Firmware BMP for STM32F407 DISCO boards

Kept for historical reasons to load BMP bootloader to the STM32F103 of the onboard STLINK or external STLINKs. As stlink-tool now allows to load BMP firmware via the original STLINK bootloader is no longer really needed.

Connections:

PC2: TDI
PC4: TMS/SWDIO
PC5: TCK/SWCLK
PC6: TDO/TRACESWO

PC1: TRST
PC8: SRST