configs/arm_foundationv8: bump to Linux 5.16.20

Signed-off-by: Vincent Stehlé <vincent.stehle@laposte.net>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

configs/arm_foundationv8_defconfig

@@ -1,10 +1,10 @@
 BR2_aarch64=y
-# Linux headers same as kernel, a 5.9 series
-BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_9=y
+# Linux headers same as kernel, a 5.16 series
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_16=y
 BR2_TARGET_GENERIC_GETTY_PORT="ttyAMA0"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.9.11"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.16.20"
 BR2_LINUX_KERNEL_USE_ARCH_DEFAULT_CONFIG=y
 BR2_LINUX_KERNEL_DTS_SUPPORT=y
 BR2_LINUX_KERNEL_INTREE_DTS_NAME="arm/foundation-v8-gicv3-psci"