perf: fix build with kernel older than 4.8

* perf is failing to build for me since this oe-core commit:
  commit 9b38c824961fc9dce51bda95c25dac91a69fc64f
  Author: Hongxu Jia <hongxu.jia@windriver.com>
  Date:   Tue Apr 24 11:33:47 2018 +0800

    perf: make a copy of kernel source to perf workdir

  the problem is that perf sources in kernel older than 4.8 (in my case
  4.4) are depending on the "global" include headers outside tools
  directory, e.g. swab.h in:
  kernel-source/tools$ git grep swab.h
  perf/MANIFEST:include/linux/swab.h
  perf/MANIFEST:include/uapi/linux/swab.h
  perf/util/include/asm/byteorder.h:#include "../../../../include/uapi/linux/swab.h"

  this was resolved in 4.8 with:
  commit 7e3f36411342a54f1981fa97b43550b8406a3d69
  Author: Arnaldo Carvalho de Melo <acme@redhat.com>
  Date:   Mon Jul 18 17:42:16 2016 -0300

    perf tools: Remove tools/perf/util/include/asm/byteorder.h

    Not used anymore. This also stops include linux/swab.h directly
    from the kernel sources, remove that reference from the MANIFEST.

  and few more changes to make tools/include more complete and standalone:
  tools/include in 4.15:
  asm  asm-generic  linux  tools  trace  uapi

  tools/include in 4.4:
  asm  asm-generic  linux  tools

  but copying the include header even for kernels which don't really
  need it doesn't add big overhead, so just copy include to perf sources
  for all kernels.

(From OE-Core rev: 19fb2d11a8bb3c6dfdd5edc1b9155d642dc0f5e0)

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/meta/recipes-kernel/perf/perf.bb b/meta/recipes-kernel/perf/perf.bb
index fb4e3ac668..51f5597eb9 100644
--- a/meta/recipes-kernel/perf/perf.bb
+++ b/meta/recipes-kernel/perf/perf.bb
@@ -98,6 +98,7 @@ EXTRA_OEMAKE += "\
 "
 
 PERF_SRC ?= "Makefile \
+             include \
              tools/arch \
              tools/build \
              tools/include \