configs/mx51evk: bump U-Boot and kernel versions

Bump to U-Boot 2021.01 and kernel 5.10.8 versions.

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

configs/mx51evk_defconfig

@@ -2,8 +2,8 @@
 BR2_arm=y
 BR2_cortex_a8=y
 
-# Linux headers same as kernel, a 5.1 series
-BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_1=y
+# Linux headers same as kernel, a 5.10 series
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_10=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="2018.05"
+BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2021.01"
 BR2_TARGET_UBOOT_FORMAT_IMX=y
 
 # Kernel
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.1.10"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.10.9"
 BR2_LINUX_KERNEL_DEFCONFIG="imx_v6_v7"
 BR2_LINUX_KERNEL_DTS_SUPPORT=y
 BR2_LINUX_KERNEL_INTREE_DTS_NAME="imx51-babbage"