arm64: Replace strncmp with str_has_prefix

In commit b6b27355
("tracing: Use str_has_prefix() instead of using fixed sizes")
the newly introduced str_has_prefix() was used
to replace error-prone strncmp(str, const, len).
Here fix codes with the same pattern.
Signed-off-by: NChuhong Yuan <hslester96@gmail.com>
Signed-off-by: NWill Deacon <will@kernel.org>

arch/arm64/kernel/module-plts.c

@@ -302,7 +302,7 @@ int module_frob_arch_sections(Elf_Ehdr *ehdr, Elf_Shdr *sechdrs,
 		/* sort by type, symbol index and addend */
 		sort(rels, numrels, sizeof(Elf64_Rela), cmp_rela, NULL);
 
-		if (strncmp(secstrings + dstsec->sh_name, ".init", 5) != 0)
+		if (!str_has_prefix(secstrings + dstsec->sh_name, ".init"))
 			core_plts += count_plts(syms, rels, numrels,
 						sechdrs[i].sh_info, dstsec);
 		else

arch/arm64/mm/numa.c

@@ -29,7 +29,7 @@ static __init int numa_parse_early_param(char *opt)
 {
 	if (!opt)
 		return -EINVAL;
-	if (!strncmp(opt, "off", 3))
+	if (str_has_prefix(opt, "off"))
 		numa_off = true;
 
 	return 0;