arm64: Declare non global symbols as static

Fix below sparse warnings introduced while adding errata.

arch/arm64/kernel/cpu_errata.c:218:25: sparse: warning: symbol
'cavium_erratum_23154_cpus' was not declared. Should it be static?

Reported-by: kernel test robot <[email protected]>
Signed-off-by: Linu Cherian <[email protected]>
Acked-by: Will Deacon <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Catalin Marinas <[email protected]>

Author: Linu Cherian

arch/arm64/kernel/cpu_errata.c

@@ -215,7 +215,7 @@ static const struct arm64_cpu_capabilities arm64_repeat_tlbi_list[] = {
 #endif
 
 #ifdef CONFIG_CAVIUM_ERRATUM_23154
-const struct midr_range cavium_erratum_23154_cpus[] = {
+static const struct midr_range cavium_erratum_23154_cpus[] = {
 	MIDR_ALL_VERSIONS(MIDR_THUNDERX),
 	MIDR_ALL_VERSIONS(MIDR_THUNDERX_81XX),
 	MIDR_ALL_VERSIONS(MIDR_THUNDERX_83XX),