linux-user: Fix madvise(MADV_DONTNEED) on alpha

MADV_DONTNEED has a different value on alpha, compared to all the other
architectures. Fix by using TARGET_MADV_DONTNEED instead of
MADV_DONTNEED.

Fixes: 892a4f6a750a ("linux-user: Add partial support for MADV_DONTNEED")
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220906000839.1672934-3-iii@linux.ibm.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
diff --git a/linux-user/mmap.c b/linux-user/mmap.c
index 83fdae7..942bec7 100644
--- a/linux-user/mmap.c
+++ b/linux-user/mmap.c
@@ -22,6 +22,7 @@
 #include "qemu.h"
 #include "user-internals.h"
 #include "user-mmap.h"
+#include "target_mman.h"
 
 static pthread_mutex_t mmap_mutex = PTHREAD_MUTEX_INITIALIZER;
 static __thread int mmap_lock_count;
@@ -897,7 +898,7 @@
      * anonymous mappings. In this case passthrough is safe, so do it.
      */
     mmap_lock();
-    if (advice == MADV_DONTNEED &&
+    if (advice == TARGET_MADV_DONTNEED &&
         can_passthrough_madv_dontneed(start, end)) {
         ret = get_errno(madvise(g2h_untagged(start), len, MADV_DONTNEED));
         if (ret == 0) {