scripts/update-linux-headers.sh: adjust for Linux 4.21-rc1 (or 5.0-rc1)

There are three new indirect inclusions: vhost_types.h, which we'll
shortly put to use as a portable header and thus is copied to
standard-headers; and new per-subtarget versions of MIPS unistd.h
and PowerPC unistd.h.

Because vhost.h includes vhost_types.h, we also need a proxy include
from linux/vhost.h to standard-headers.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
diff --git a/scripts/update-linux-headers.sh b/scripts/update-linux-headers.sh
index 0a964fe..c933489 100755
--- a/scripts/update-linux-headers.sh
+++ b/scripts/update-linux-headers.sh
@@ -101,6 +101,13 @@
 
     if [ $arch = mips ]; then
         cp "$tmpdir/include/asm/sgidefs.h" "$output/linux-headers/asm-mips/"
+        cp "$tmpdir/include/asm/unistd_o32.h" "$output/linux-headers/asm-mips/"
+        cp "$tmpdir/include/asm/unistd_n32.h" "$output/linux-headers/asm-mips/"
+        cp "$tmpdir/include/asm/unistd_n64.h" "$output/linux-headers/asm-mips/"
+    fi
+    if [ $arch = powerpc ]; then
+        cp "$tmpdir/include/asm/unistd_32.h" "$output/linux-headers/asm-powerpc/"
+        cp "$tmpdir/include/asm/unistd_64.h" "$output/linux-headers/asm-powerpc/"
     fi
 
     rm -rf "$output/include/standard-headers/asm-$arch"
@@ -162,6 +169,9 @@
 cat <<EOF >$output/linux-headers/linux/virtio_ring.h
 #include "standard-headers/linux/virtio_ring.h"
 EOF
+cat <<EOF >$output/linux-headers/linux/vhost_types.h
+#include "standard-headers/linux/vhost_types.h"
+EOF
 
 rm -rf "$output/include/standard-headers/linux"
 mkdir -p "$output/include/standard-headers/linux"
@@ -171,6 +181,7 @@
          "$tmpdir/include/linux/input-event-codes.h" \
          "$tmpdir/include/linux/pci_regs.h" \
          "$tmpdir/include/linux/ethtool.h" "$tmpdir/include/linux/kernel.h" \
+         "$tmpdir/include/linux/vhost_types.h" \
          "$tmpdir/include/linux/sysinfo.h"; do
     cp_portable "$i" "$output/include/standard-headers/linux"
 done