Include poll.h instead of sys/poll.h

That is the proper POSIX way.

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>

src/lxc/lxc_driver.c

@@ -30,7 +30,7 @@
 #endif
 
 #include <sys/stat.h>
-#include <sys/poll.h>
+#include <poll.h>
 #include <unistd.h>
 #include <wait.h>
 

src/network/bridge_driver.c

@@ -22,7 +22,7 @@
 #include <config.h>
 
 #include <sys/types.h>
-#include <sys/poll.h>
+#include <poll.h>
 #include <stdarg.h>
 #include <unistd.h>
 #include <sys/utsname.h>

src/openvz/openvz_driver.c

@@ -24,7 +24,7 @@
 #include <config.h>
 
 #include <sys/types.h>
-#include <sys/poll.h>
+#include <poll.h>
 #include <stdarg.h>
 #include <unistd.h>
 #include <sys/stat.h>

src/qemu/qemu_driver.c

@@ -22,7 +22,7 @@
 #include <config.h>
 
 #include <sys/types.h>
-#include <sys/poll.h>
+#include <poll.h>
 #include <sys/time.h>
 #include <dirent.h>
 #include <stdarg.h>

src/vz/vz_driver.c

@@ -24,7 +24,7 @@
 #include <config.h>
 
 #include <sys/types.h>
-#include <sys/poll.h>
+#include <poll.h>
 #include <stdarg.h>
 #include <unistd.h>
 #include <sys/stat.h>