arm64: kpti: Add NVIDIA's Carmel core to the KPTI whitelist

NVIDIA Carmel CPUs don't implement ID_AA64PFR0_EL1.CSV3 but
aren't susceptible to Meltdown, so add Carmel to kpti_safe_list[].
Signed-off-by: Rich Wiley <rwiley@nvidia.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

arch/arm64/kernel/cpufeature.c

@@ -977,6 +977,7 @@ static bool unmap_kernel_at_el0(const struct arm64_cpu_capabilities *entry,
 		MIDR_ALL_VERSIONS(MIDR_CORTEX_A72),
 		MIDR_ALL_VERSIONS(MIDR_CORTEX_A73),
 		MIDR_ALL_VERSIONS(MIDR_HISI_TSV110),
+		MIDR_ALL_VERSIONS(MIDR_NVIDIA_CARMEL),
 		{ /* sentinel */ }
 	};
 	char const *str = "kpti command line option";