Merge VESNIN server defconfig from https://github.com/artemsen/op-build

In the merge, point vesnin-xml to the OpenPOWER repository
diff --git a/openpower/configs/vesnin_defconfig b/openpower/configs/vesnin_defconfig
new file mode 100644
index 0000000..0425d18
--- /dev/null
+++ b/openpower/configs/vesnin_defconfig
@@ -0,0 +1,57 @@
+BR2_powerpc64le=y
+BR2_powerpc_power8=y
+BR2_BINUTILS_EXTRA_CONFIG_OPTIONS="--enable-targets=powerpc64-linux"
+BR2_EXTRA_GCC_CONFIG_OPTIONS="--enable-targets=powerpc64-linux --disable-libsanitizer"
+BR2_TOOLCHAIN_BUILDROOT_CXX=y
+BR2_TARGET_GENERIC_HOSTNAME="skiroot"
+BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_EUDEV=y
+BR2_ROOTFS_DEVICE_TABLE="../openpower/device_table.txt"
+BR2_TARGET_GENERIC_GETTY_PORT="hvc0"
+BR2_GENERATE_LOCALE="en_US.UTF-8"
+BR2_ROOTFS_OVERLAY="../openpower/overlay"
+BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
+BR2_LINUX_KERNEL=y
+BR2_LINUX_KERNEL_CUSTOM_VERSION=y
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.15.6"
+BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
+BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
+BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
+BR2_LINUX_KERNEL_ZIMAGE_EPAPR=y
+BR2_PACKAGE_BUSYBOX_CONFIG_FRAGMENT_FILES="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/busybox.fragment"
+BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
+BR2_PACKAGE_I2C_TOOLS=y
+BR2_PACKAGE_IPMITOOL=y
+BR2_PACKAGE_MDADM=y
+BR2_PACKAGE_NCURSES_WCHAR=y
+BR2_PACKAGE_DROPBEAR=y
+# BR2_PACKAGE_DROPBEAR_SERVER is not set
+BR2_PACKAGE_ETHTOOL=y
+BR2_PACKAGE_NETCAT=y
+BR2_PACKAGE_RSYNC=y
+BR2_TARGET_ROOTFS_CPIO_XZ=y
+BR2_TARGET_ROOTFS_INITRAMFS=y
+BR2_OPENPOWER_PLATFORM=y
+BR2_OPENPOWER_POWER8=y
+BR2_HOSTBOOT_CONFIG_FILE="vesnin.config"
+BR2_OPENPOWER_MACHINE_XML_GITHUB_PROJECT_VALUE="vesnin-xml"
+BR2_OPENPOWER_MACHINE_XML_VERSION="38ff4b8db62d43e330fab404cd2b76bd35a4a062"
+BR2_OPENPOWER_MACHINE_XML_FILENAME="vesnin.xml"
+BR2_OPENPOWER_SYSTEM_XML_FILENAME="VESNIN_hb.system.xml"
+BR2_OPENPOWER_MRW_XML_FILENAME="VESNIN_hb.mrw.xml"
+BR2_OPENPOWER_BIOS_XML_FILENAME="VESNIN_bios.xml"
+BR2_OPENPOWER_PNOR_XML_LAYOUT_FILENAME="defaultPnorLayoutWithGoldenSide.xml"
+BR2_OPENPOWER_CONFIG_NAME="vesnin"
+BR2_OPENPOWER_PNOR_FILENAME="vesnin.pnor"
+BR2_OPENPOWER_PNOR_UPDATE_FILENAME="vesnin_update.pnor"
+BR2_HOSTBOOT_BINARY_SBE_FILENAME="venice_sbe.img.ecc"
+BR2_HOSTBOOT_BINARY_SBEC_FILENAME="centaur_sbec_pad.img.ecc"
+BR2_HOSTBOOT_BINARY_WINK_FILENAME="p8.ref_image.hdr.bin.ecc"
+BR2_IMA_CATALOG_FILENAME="ima_catalog.bin"
+BR2_OPENPOWER_TARGETING_BIN_FILENAME="VESNIN_HB.targeting.bin"
+BR2_OPENPOWER_TARGETING_ECC_FILENAME="VESNIN_HB.targeting.bin.ecc"
+BR2_PACKAGE_PETITBOOT=y
+BR2_PACKAGE_PETITBOOT_MTD=y
+BR2_OCC_BIN_FILENAME="occ.bin"
+BR2_CAPP_UCODE_BIN_FILENAME="cappucode.bin"
+BR2_PACKAGE_LOADKEYS=y
+BR2_IMA_CATALOG_DTS="POWER8"