Fewer copies of ALIGN()/ALIGNBYTES.

Noticed while updating fts.c.

Bug: http://b/177003648
Test: treehugger
Change-Id: Ic3625c1c3af47c4dafb8ad686bbbddbc82b69b70
diff --git a/libc/upstream-openbsd/android/include/openbsd-compat.h b/libc/upstream-openbsd/android/include/openbsd-compat.h
index 2fc5046..6c21c5b 100644
--- a/libc/upstream-openbsd/android/include/openbsd-compat.h
+++ b/libc/upstream-openbsd/android/include/openbsd-compat.h
@@ -25,6 +25,8 @@
 
 #include <sys/random.h> // For getentropy.
 
+#include "private/bsd_sys_param.h"
+
 #define __BEGIN_HIDDEN_DECLS _Pragma("GCC visibility push(hidden)")
 #define __END_HIDDEN_DECLS _Pragma("GCC visibility pop")
 
@@ -57,10 +59,6 @@
 
 #define explicit_bzero(p, s) memset(p, 0, s)
 
-/* OpenBSD has these in <sys/param.h>, but "ALIGN" isn't something we want to reserve. */
-#define ALIGNBYTES (sizeof(uintptr_t) - 1)
-#define ALIGN(p) (((uintptr_t)(p) + ALIGNBYTES) &~ ALIGNBYTES)
-
 /* OpenBSD has this in paths.h. But this directory doesn't normally exist.
  * Even when it does exist, only the 'shell' user has permissions.
  */