configs/mx51evk: Bump U-Boot and kernel versions

Bump U-Boot to version 2017.11 and kernel to 4.14.3.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

configs/mx51evk_defconfig

@@ -2,8 +2,8 @@
 BR2_arm=y
 BR2_cortex_a8=y
 
-# Linux headers same as kernel, a 4.9 series
-BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_9=y
+# Linux headers same as kernel, a 4.14 series
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_14=y
 
 # System
 BR2_TARGET_GENERIC_GETTY_PORT="ttymxc0"
@@ -22,13 +22,13 @@ BR2_TARGET_ROOTFS_EXT2_4=y
 BR2_TARGET_UBOOT=y
 BR2_TARGET_UBOOT_BOARDNAME="mx51evk"
 BR2_TARGET_UBOOT_CUSTOM_VERSION=y
-BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2017.01"
+BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2017.11"
 BR2_TARGET_UBOOT_FORMAT_IMX=y
 
 # Kernel
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.9.13"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.14.3"
 BR2_LINUX_KERNEL_DEFCONFIG="imx_v6_v7"
 BR2_LINUX_KERNEL_DTS_SUPPORT=y
 BR2_LINUX_KERNEL_INTREE_DTS_NAME="imx51-babbage"