ARM: configs: Add multi_v8.config for ARMv8 AArch32 support

This patch is to add multi_v8.config for AArch32 support on ARMv8
platforms.

The default config for ARMv8 AArch32 support is multi_v7_defconfig +
multi_v7_lpae.config + multi_v8.config.

Signed-off-by: Alison Wang <alison.wang@nxp.com>

arch/arm/configs/multi_v8.config

+# ppfe
+CONFIG_FSL_PPFE=y
+# DPAA 1
+CONFIG_HAS_FSL_QBMAN=y
+# network
+CONFIG_BRIDGE=m
+CONFIG_MACVLAN=y
+CONFIG_FSL_SDK_FMAN=y
+CONFIG_FMAN_ARM=y
+CONFIG_FSL_SDK_DPAA_ETH=y
+CONFIG_INET_ESP=y
+CONFIG_XFRM_USER=y
+CONFIG_NET_KEY=y
+# mdio
+CONFIG_FSL_XGMAC_MDIO=y
+CONFIG_MDIO_BUS_MUX_MMIOREG=y
+# phy
+CONFIG_AQUANTIA_PHY=y
+CONFIG_VITESSE_PHY=y
+# NVMe
+CONFIG_BLK_DEV_NVME=y
+# vfio
+CONFIG_VFIO=y
+CONFIG_VFIO_PCI=y
+CONFIG_VFIO_FSL_MC=y