configs/olimex_imx233_olinuxino: bump kernel version

Signed-off-by: Francois Perrad <francois.perrad@gadz.org>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

configs/olimex_imx233_olinuxino_defconfig

@@ -2,8 +2,8 @@
 BR2_arm=y
 BR2_arm926t=y
 
-# Linux headers same as kernel, a 4.19 series
-BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_19=y
+# Linux headers same as kernel, a 5.4 series
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_4=y
 
 # System
 BR2_TARGET_GENERIC_GETTY_PORT="ttyAMA0"
@@ -14,7 +14,7 @@ BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_MDEV=y
 # Kernel
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.19.2"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.4.8"
 BR2_LINUX_KERNEL_DEFCONFIG="mxs"
 BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="board/olimex/imx233_olinuxino/linux-wifi.fragment"
 BR2_LINUX_KERNEL_DTS_SUPPORT=y