update-linux-headers: update for 4.11

The linux-headers/asm-arm/unistd.h file has been split in three
sub-files, copy them along.  However, building them requires
setting ARCH rather than SRCARCH.

SRCARCH defaults to $(ARCH) anyway; to avoid future occurrence of
the same problem use ARCH for all architectures where SRCARCH=ARCH.
Currently these are all except x86, sparc, sh and tile.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Message-id: 20170221122920.16245-2-pbonzini@redhat.com
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

scripts/update-linux-headers.sh

@@ -75,7 +75,13 @@ for arch in $ARCHLIST; do
         continue
     fi
 
-    make -C "$linux" INSTALL_HDR_PATH="$tmpdir" SRCARCH=$arch headers_install
+    if [ "$arch" = x86 ]; then
+        arch_var=SRCARCH
+    else
+        arch_var=ARCH
+    fi
+
+    make -C "$linux" INSTALL_HDR_PATH="$tmpdir" $arch_var=$arch headers_install
 
     rm -rf "$output/linux-headers/asm-$arch"
     mkdir -p "$output/linux-headers/asm-$arch"
@@ -92,6 +98,11 @@ for arch in $ARCHLIST; do
         cp_portable "$tmpdir/include/asm/kvm_virtio.h" "$output/include/standard-headers/asm-s390/"
         cp_portable "$tmpdir/include/asm/virtio-ccw.h" "$output/include/standard-headers/asm-s390/"
     fi
+    if [ $arch = arm ]; then
+        cp "$tmpdir/include/asm/unistd-eabi.h" "$output/linux-headers/asm-arm/"
+        cp "$tmpdir/include/asm/unistd-oabi.h" "$output/linux-headers/asm-arm/"
+        cp "$tmpdir/include/asm/unistd-common.h" "$output/linux-headers/asm-arm/"
+    fi
     if [ $arch = x86 ]; then
         cp_portable "$tmpdir/include/asm/hyperv.h" "$output/include/standard-headers/asm-x86/"
         cp "$tmpdir/include/asm/unistd_32.h" "$output/linux-headers/asm-x86/"