libcap: fix the libcap-native building failure on CentOS 6.7

(From OE-Core rev: a80656588a5122b0930a0d8a574c6633118f78d4)

Signed-off-by: Roy Li <rongqing.li@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-support/libcap/files/0001-ensure-the-XATTR_NAME_CAPS-is-defined-when-it-is-use.patch

@@ -0,0 +1,32 @@
+ensure the XATTR_NAME_CAPS is defined when it is used
+
+Upstream-status: Pending
+
+VFS_CAP_U32 can not ensure that XATTR_NAME_CAPS is defined, and failed to build
+libcap-native in old release, like CentOS release 6.7 (Final), with the blow
+error:
+     cap_file.c: In function ‘cap_get_fd’:
+     cap_file.c:199: error: ‘XATTR_NAME_CAPS’ undeclared (first use in this function)
+     cap_file.c:199: error: (Each undeclared identifier is reported only once
+
+Signed-off-by: Roy Li <rongqing.li@windriver.com>
+---
+ libcap/cap_file.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/libcap/cap_file.c b/libcap/cap_file.c
+index 40756ea..e27ca80 100644
+--- a/libcap/cap_file.c
++++ b/libcap/cap_file.c
+@@ -25,7 +25,7 @@ extern int fremovexattr(int, const char *);
+ 
+ #include "libcap.h"
+ 
+-#ifdef VFS_CAP_U32
++#if defined (VFS_CAP_U32) && defined (XATTR_NAME_CAPS)
+ 
+ #if VFS_CAP_U32 != __CAP_BLKS
+ # error VFS representation of capabilities is not the same size as kernel
+-- 
+2.8.1
+

meta/recipes-support/libcap/libcap_2.25.bb

@@ -7,8 +7,9 @@ LIC_FILES_CHKSUM = "file://License;md5=3f84fd6f29d453a56514cb7e4ead25f1"
 
 DEPENDS = "hostperl-runtime-native"
 
-SRC_URI = "${KERNELORG_MIRROR}/linux/libs/security/linux-privs/${BPN}2/${BPN}-${PV}.tar.xz"
-
+SRC_URI = "${KERNELORG_MIRROR}/linux/libs/security/linux-privs/${BPN}2/${BPN}-${PV}.tar.xz \
+           file://0001-ensure-the-XATTR_NAME_CAPS-is-defined-when-it-is-use.patch \
+"
 SRC_URI[md5sum] = "6666b839e5d46c2ad33fc8aa2ceb5f77"
 SRC_URI[sha256sum] = "693c8ac51e983ee678205571ef272439d83afe62dd8e424ea14ad9790bc35162"