Define MAP_SYNC and MAP_SHARED_VALIDATE on needed linux systems

linux only wires MAP_SYNC and MAP_SHARED_VALIDATE for architectures
which include asm-generic/mman.h and mips/powerpc are not including this
file in linux/mman.h, therefore these should be defined for such
architectures on Linux as well. This fixes build on mips/musl/linux

Upstream-Status: Submitted [https://lists.nongnu.org/archive/html/qemu-devel/2022-03/msg05298.html]
Signed-off-by: Khem Raj <[email protected]>
Cc: Zhang Yi <[email protected]>
Cc: Michael S. Tsirkin <[email protected]>

Author: kraj

util/mmap-alloc.c

@@ -10,14 +10,18 @@
  * later.  See the COPYING file in the top-level directory.
  */
 
+#include "qemu/osdep.h"
 #ifdef CONFIG_LINUX
 #include <linux/mman.h>
-#else  /* !CONFIG_LINUX */
+#endif  /* CONFIG_LINUX */
+
+#ifndef MAP_SYNC
 #define MAP_SYNC              0x0
+#endif /* MAP_SYNC */
+#ifndef MAP_SHARED_VALIDATE
 #define MAP_SHARED_VALIDATE   0x0
-#endif /* CONFIG_LINUX */
+#endif /* MAP_SHARED_VALIDATE */
 
-#include "qemu/osdep.h"
 #include "qemu/mmap-alloc.h"
 #include "qemu/host-utils.h"
 #include "qemu/cutils.h"