mvebu: enable NEON support

Signed-off-by: Felix Fietkau <[email protected]>

target/linux/mvebu/config-4.4

@@ -280,7 +280,7 @@ CONFIG_MVNETA_BM=y
 CONFIG_MVSW61XX_PHY=y
 CONFIG_MV_XOR=y
 CONFIG_NEED_DMA_MAP_STATE=y
-# CONFIG_NEON is not set
+CONFIG_NEON=y
 CONFIG_NET_FLOW_LIMIT=y
 CONFIG_NLS=y
 CONFIG_NOP_USB_XCEIV=y