[PATCH master] kwboot: add missing header to fix musl build

[Marco Felsch]

On 23-02-17, Ahmad Fatoum wrote:
> Building kwboot for musl instead of glibc results in a couple of errors:
> 
>   error: unknown type name 'fd_set'
>   error: storage size of 'tv' isn't known
>     142 |         struct timeval tv;
>   warning: implicit declaration of function 'FD_ZERO'
>   warning: implicit declaration of function 'FD_SET'
>   warning: implicit declaration of function 'select'
>   warning: implicit declaration of function 'FD_ISSET'
> 
> POSIX specifies[1] that all these symbols shall be defined by <sys/select.h>,
> so include this missing header.
> 
> [1]: https://pubs.opengroup.org/onlinepubs/009695399/basedefs/sys/select.h.html
> 
> Reported-by: Alexandre Belloni <alexandre.belloni at bootlin.com>
> Link: https://lore.kernel.org/openembedded-core/Y91ObtiQCtnpGaRH@mail.local/
> Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>

Reviewed-by: Marco Felsch <m.felsch at pengutronix.de>

> ---
>  scripts/kwboot.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/scripts/kwboot.c b/scripts/kwboot.c
> index 1cbb456935f2..2a4f6bc5fc58 100644
> --- a/scripts/kwboot.c
> +++ b/scripts/kwboot.c
> @@ -22,6 +22,7 @@
>  #include <termios.h>
>  #include <sys/mman.h>
>  #include <sys/stat.h>
> +#include <sys/select.h>
>  
>  /*
>   * Marvell BootROM UART Sensing
> -- 
> 2.30.2
> 
> 
>