configs: Update kernel for all platforms

This brings in a single patch, kernel/reboot: Fix orderly_reboot, which
fixes power off behaviour of the kernel.

Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/openpower/configs/palmetto_defconfig b/openpower/configs/palmetto_defconfig
index 1468fe8..6f6c27e 100644
--- a/openpower/configs/palmetto_defconfig
+++ b/openpower/configs/palmetto_defconfig
@@ -42,7 +42,7 @@
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_GIT=y
 BR2_LINUX_KERNEL_CUSTOM_REPO_URL="git://github.com/open-power/linux.git"
-BR2_LINUX_KERNEL_CUSTOM_REPO_VERSION="d0ff068a9962ba96d4e6ddfba2a4e9fd8bc9a763"
+BR2_LINUX_KERNEL_CUSTOM_REPO_VERSION="e824e6e6703395305408777ea3a930886cb7f3e9"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL)/configs/linux/skiroot_defconfig"
 BR2_LINUX_KERNEL_ZIMAGE_EPAPR=y