image_types.bbclass: add wic image type

wic image type is used to produce partitioned images.

Image configuration should be stored in either <recipe>.<machine>.wks
or <recipe>.wks file.
.wks file should be put to the same location as image recipe
and have the same name.

[YOCTO #7672]

(From OE-Core rev: 3658a3278a3752d4aa72cdff4aa8c9f5e1d90f93)

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/image_types.bbclass

@@ -162,6 +162,16 @@ IMAGE_CMD_ubi = "multiubi_mkfs "${MKUBIFS_ARGS}" "${UBINIZE_ARGS}" "${UBI_VOLNAM
 
 IMAGE_CMD_ubifs = "mkfs.ubifs -r ${IMAGE_ROOTFS} -o ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.ubifs ${MKUBIFS_ARGS}"
 
+IMAGE_CMD_wic () {
+	out=${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}
+	wks=${FILE_DIRNAME}/${IMAGE_BASENAME}.${MACHINE}.wks
+	[ -e $wks ] || wks=${FILE_DIRNAME}/${IMAGE_BASENAME}.wks
+	[ -e $wks ] || bbfatal "Kiskstart file $wks doesn't exist"
+	BUILDDIR=${TOPDIR} wic create $wks --vars ${STAGING_DIR_TARGET}/imgdata/ -e ${IMAGE_BASENAME} -o $out/
+	mv $out/build/${IMAGE_BASENAME}*.direct $out.rootfs.wic
+	rm -rf $out/
+}
+
 EXTRA_IMAGECMD = ""
 
 inherit siteinfo
@@ -190,6 +200,7 @@ IMAGE_DEPENDS_elf = "virtual/kernel mkelfimage-native"
 IMAGE_DEPENDS_ubi = "mtd-utils-native"
 IMAGE_DEPENDS_ubifs = "mtd-utils-native"
 IMAGE_DEPENDS_multiubi = "mtd-utils-native"
+IMAGE_DEPENDS_wic = "parted-native"
 
 # This variable is available to request which values are suitable for IMAGE_FSTYPES
 IMAGE_TYPES = " \
@@ -209,6 +220,7 @@ IMAGE_TYPES = " \
     vdi \
     qcow2 \
     elf \
+    wic wic.gz wic.bz2 wic.lzma \
 "
 
 COMPRESSIONTYPES = "gz bz2 lzma xz lz4 sum"