arm64: Enable HIBERNATION in defconfig

This patch adds CONFIG_HIBERNATION to the arm64 defconfig.
Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>

arch/arm64/configs/defconfig

@@ -82,6 +82,7 @@ CONFIG_KEXEC=y
 # CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
 CONFIG_COMPAT=y
 CONFIG_CPU_IDLE=y
+CONFIG_HIBERNATION=y
 CONFIG_ARM_CPUIDLE=y
 CONFIG_CPU_FREQ=y
 CONFIG_CPUFREQ_DT=y