Add directly loadable binary target

ports/mimxrt10xx/Makefile

@@ -220,7 +220,7 @@ OBJ += $(addprefix $(BUILD)/, $(SRC_MOD:.c=.o))
 
 SRC_QSTR += $(SRC_C) $(SRC_SUPERVISOR) $(SRC_COMMON_HAL_EXPANDED) $(SRC_SHARED_MODULE_EXPANDED)
 
-all: $(BUILD)/firmware.bin $(BUILD)/firmware.uf2 $(BUILD)/firmware.hex
+all: $(BUILD)/firmware.bin $(BUILD)/firmware.uf2 $(BUILD)/firmware.hex $(BUILD)/firmware-bootable.bin
 
 $(BUILD)/firmware.elf: $(OBJ) $(LD_FILES)
 	$(STEPECHO) "LINK $@"
@@ -237,6 +237,10 @@ $(BUILD)/firmware.uf2: $(BUILD)/firmware.bin
 $(BUILD)/firmware.hex: $(BUILD)/firmware.elf
 	$(Q)$(OBJCOPY) -O ihex -j .flash_config -j .ivt -j .text -j .ARM.exidx -j .data -j .itcm -j .dtcm_data $< $@
 
+$(BUILD)/firmware-bootable.bin: $(BUILD)/firmware.elf
+	$(STEPECHO) "Create $@"
+	$(Q)$(OBJCOPY) -O binary -j .flash_config -j .ivt -j .text -j .ARM.exidx -j .data -j .itcm -j .dtcm_data $< $@
+
 include $(TOP)/py/mkrules.mk
 
 # Print out the value of a make variable.