This issue was reported by @paper42, who is using Void Linux with musl
to compile OpenWrt and its packages and found out it is not possible to
compile U-boot for Turris Omnia (neither any other).
It fixes following output:
```
HOSTCC tools/kwboot
tools/kwboot.c: In function 'kwboot_tty_change_baudrate':
tools/kwboot.c:662:6: error: 'struct termios' has no member named 'c_ospeed'
662 | tio.c_ospeed = tio.c_ispeed = baudrate;
| ^
tools/kwboot.c:662:21: error: 'struct termios' has no member named 'c_ispeed'
662 | tio.c_ospeed = tio.c_ispeed = baudrate;
| ^
tools/kwboot.c:690:31: error: 'struct termios' has no member named 'c_ospeed'
690 | if (!_is_within_tolerance(tio.c_ospeed, baudrate, 3))
| ^
tools/kwboot.c:693:31: error: 'struct termios' has no member named 'c_ispeed'
693 | if (!_is_within_tolerance(tio.c_ispeed, baudrate, 3))
|
```
Tested-by: Michal Vasilek <michal.vasilek@nic.cz>
Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>
