Fix: Improved support for writing option bytes

[2a17]

(Closes #1128)

[2a17]

option byte wirte does not work, parameter is not forwarded

[2a17]

tested on chip id 0x0413

[Ant-ON]

@2a17 Yes, сorrections in the right direction. Writing option byte have bug now (not work). But it is worth paying attention to write code:

stlink/src/st-flash/flash.c

Lines 182 to 193 in cc9bedd

	} else if (o.area == FLASH_OPTION_BYTES) {
	if (o.val == 0) {
	printf("attempting to set option byte to 0, abort.\n");
	goto on_error;
	}
	err = stlink_write_option_bytes32(sl, o.val);
	if (err == -1) {
	printf("stlink_write_option_bytes32() == -1\n");
	goto on_error;
	}

Parsing needs to be simplify by remove unused parameters (filename and addr)