kernel: Move to Linux v5.4.33-openpower1

PowerPC releated changes:

 powerpc/kasan: Fix kasan_remap_early_shadow_ro()
 powerpc: Make setjmp/longjmp signature standard
 powerpc/64: Prevent stack protection in early boot
 powerpc/kprobes: Ignore traps that happened in real mode
 powerpc/xive: Fix xmon support on the PowerNV platform
 powerpc/64: Setup a paca before parsing device tree etc.
 powerpc/xive: Use XIVE_BAD_IRQ instead of zero to catch non configured IPIs
 powerpc/hash64/devmap: Use H_PAGE_THP_HUGE when setting up huge devmap PTE entries
 powerpc/64/tm: Don't let userspace set regs->trap via sigreturn

Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/openpower/configs/nicole_defconfig b/openpower/configs/nicole_defconfig
index f151c64..26a681a 100644
--- a/openpower/configs/nicole_defconfig
+++ b/openpower/configs/nicole_defconfig
@@ -16,7 +16,7 @@
 BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.4.30"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.4.33"
 BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"