configs/bananapro: bump U-Boot to 2017.03

Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

configs/bananapro_defconfig

@@ -42,7 +42,7 @@ BR2_TARGET_ROOTFS_EXT2_4=y
 BR2_TARGET_UBOOT=y
 BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
 BR2_TARGET_UBOOT_CUSTOM_VERSION=y
-BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2016.11"
+BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2017.03"
 BR2_TARGET_UBOOT_BOARD_DEFCONFIG="Bananapro"
 BR2_TARGET_UBOOT_NEEDS_DTC=y
 BR2_TARGET_UBOOT_FORMAT_BIN=y