kvmtool: fix compilation errors

Fixed issues:
Usage of makedev requires including <sys/sysmacros.h> otherwise
the error is raised due to multiple definition in <sys/types.h>.

Add include path to kernel headers required to get kvmtool
compilatioin successful.

Signed-off-by: Dariusz Pelowski <dariusz.pelowski@gmail.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>

recipes-extended/kvmtool/files/0001-kvmtool-9p-fixed-compilation-error.patch

@@ -0,0 +1,27 @@
+From bcd954ffdb9383030e02d356b51e09e4e2a7105a Mon Sep 17 00:00:00 2001
+From: Dariusz Pelowski <dariusz.pelowski@gmail.com>
+Date: Sun, 5 Nov 2017 12:39:52 +0100
+Subject: [PATCH 1/2] kvmtool: 9p: fixed compilation error
+
+makedev is defined in sys/sysmacros.h
+
+Signed-off-by: Dariusz Pelowski <dariusz.pelowski@gmail.com>
+---
+ virtio/9p.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/virtio/9p.c b/virtio/9p.c
+index 6acbfdd..1dee2c2 100644
+--- a/virtio/9p.c
++++ b/virtio/9p.c
+@@ -15,6 +15,7 @@
+ #include <string.h>
+ #include <errno.h>
+ #include <sys/vfs.h>
++#include <sys/sysmacros.h>
+ 
+ #include <linux/virtio_ring.h>
+ #include <linux/virtio_9p.h>
+-- 
+2.15.0
+

recipes-extended/kvmtool/files/0002-kvmtool-add-EXTRA_CFLAGS-variable.patch

@@ -0,0 +1,29 @@
+From 977a4d41012d1814f5a5330cacc2e4944de387cc Mon Sep 17 00:00:00 2001
+From: Dariusz Pelowski <dariusz.pelowski@gmail.com>
+Date: Sun, 5 Nov 2017 12:39:21 +0100
+Subject: [PATCH 2/2] kvmtool: add EXTRA_CFLAGS variable
+
+to avoid CFLAGS overriding introduce new EXTRA_CFLAGS variable
+for setting via command argument
+
+Signed-off-by: Dariusz Pelowski <dariusz.pelowski@gmail.com>
+---
+ Makefile | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/Makefile b/Makefile
+index 64a0a16..bca1b26 100644
+--- a/Makefile
++++ b/Makefile
+@@ -2,6 +2,8 @@
+ # Define WERROR=0 to disable -Werror.
+ #
+ 
++CFLAGS += $(EXTRA_CFLAGS)
++
+ ifeq ($(strip $(V)),)
+ 	E = @echo
+ 	Q = @
+-- 
+2.15.0
+

recipes-extended/kvmtool/kvmtool.bb

@@ -5,10 +5,15 @@ LICENSE = "GPLv2"
 LIC_FILES_CHKSUM = "file://COPYING;md5=fcb02dc552a041dee27e4b85c7396067"
 
 DEPENDS = "dtc libaio zlib"
+do_configure[depends] += "virtual/kernel:do_shared_workdir"
+
+inherit kernel-arch
 
 SRC_URI = "git://git.kernel.org/pub/scm/linux/kernel/git/will/kvmtool.git \
            file://external-crosscompiler.patch \
            file://0001-Avoid-pointers-for-address-of-packed-members.patch \
+           file://0001-kvmtool-9p-fixed-compilation-error.patch \
+           file://0002-kvmtool-add-EXTRA_CFLAGS-variable.patch \
            "
 
 SRCREV = "3fea89a924511f9f8fe05a892098fad77c1eca0d"
@@ -16,7 +21,7 @@ PV = "3.18.0+git${SRCREV}"
 
 S = "${WORKDIR}/git"
 
-EXTRA_OEMAKE='ARCH="${TARGET_ARCH}" V=1'
+EXTRA_OEMAKE='V=1 EXTRA_CFLAGS="-I${STAGING_KERNEL_DIR}/arch/${ARCH}/include -I${STAGING_KERNEL_BUILDDIR}/arch/${ARCH}/include/generated/"'
 
 do_install() {
     install -d ${D}${bindir}