Merge pull request #846 from facchinm/fix_burn_bootloader

boards.txt: update bootloader.tool for all boards

Author: pennam

boards.txt

@@ -599,6 +599,7 @@ nicla_vision.menu.target_core.cm4.upload.maximum_data_size=294248
 
 nicla_vision.debug.tool=gdb
 nicla_vision.bootloader.tool=openocd
+nicla_vision.bootloader.tool.default=openocd
 nicla_vision.bootloader.config=-f target/stm32h7x_dual_bank.cfg
 nicla_vision.bootloader.programmer=-f interface/stlink.cfg
 nicla_vision.bootloader.extra_action.preflash=stm32h7x option_write 0 0x01c 0xb86aaf0
@@ -735,6 +736,7 @@ opta.menu.target_core.cm4.upload.maximum_data_size=294248
 
 opta.debug.tool=gdb
 opta.bootloader.tool=openocd
+opta.bootloader.tool.default=openocd
 opta.bootloader.config=-f target/stm32h7x_dual_bank.cfg
 opta.bootloader.programmer=-f interface/stlink.cfg
 opta.bootloader.extra_action.preflash=stm32h7x option_write 0 0x01c 0xb86aaf0
@@ -838,6 +840,7 @@ giga.menu.target_core.cm4.upload.maximum_data_size=294248
 
 giga.debug.tool=gdb
 giga.bootloader.tool=openocd
+giga.bootloader.tool.default=openocd
 giga.bootloader.config=-f target/stm32h7x_dual_bank.cfg
 giga.bootloader.programmer=-f interface/stlink.cfg
 giga.bootloader.extra_action.preflash=stm32h7x option_write 0 0x01c 0xb86aaf0