Fix compilation failures on different arches that have vm_machdep.c not

aware of counter_u64_t by including counter.h into uma_int.h. I'm not
happy about this inclusion, but it fixes compilation ASAP.

sys/compat/linuxkpi/common/src/linux_page.c

@@ -31,7 +31,6 @@ __FBSDID("$FreeBSD$");
 
 #include <sys/param.h>
 #include <sys/systm.h>
-#include <sys/counter.h>
 #include <sys/malloc.h>
 #include <sys/kernel.h>
 #include <sys/sysctl.h>

sys/vm/uma_dbg.c

@@ -40,7 +40,6 @@ __FBSDID("$FreeBSD$");
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/bitset.h>
-#include <sys/counter.h>
 #include <sys/kernel.h>
 #include <sys/types.h>
 #include <sys/queue.h>

sys/vm/uma_int.h

@@ -30,6 +30,7 @@
  *
  */
 
+#include <sys/counter.h>
 #include <sys/_bitset.h>
 #include <sys/_domainset.h>
 #include <sys/_task.h>