use <poll.h> instead of <sys/poll.h> The manpage of poll(2) states that the prototype of poll is defined in <poll.h>. Use that header file instead of <sys/poll.h> to allow compilation against musl-libc. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>