virtio-9p-proxy: Fix typo causing compile failure on 32 bit hosts

Fix a compile failure on 32 bit hosts (integer constant is too large
for 'unsigned long' type) by correcting a typo where the mask used
for filling in the second f_fsid word had too many 'F's in it.
Also drop the 'L' suffix that allowed this typo to go undetected on
64 bit hosts.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

hw/9pfs/virtio-9p-proxy.c

@@ -112,8 +112,8 @@ static void prstatfs_to_statfs(struct statfs *stfs, ProxyStatFS *prstfs)
     stfs->f_bavail = prstfs->f_bavail;
     stfs->f_files = prstfs->f_files;
     stfs->f_ffree = prstfs->f_ffree;
-    stfs->f_fsid.__val[0] = prstfs->f_fsid[0] & 0xFFFFFFFFUL;
-    stfs->f_fsid.__val[1] = prstfs->f_fsid[1] >> 32 & 0xFFFFFFFFFUL;
+    stfs->f_fsid.__val[0] = prstfs->f_fsid[0] & 0xFFFFFFFFU;
+    stfs->f_fsid.__val[1] = prstfs->f_fsid[1] >> 32 & 0xFFFFFFFFU;
     stfs->f_namelen = prstfs->f_namelen;
     stfs->f_frsize = prstfs->f_frsize;
 }