module: Take const arg in validate_section_offset

`validate_section_offset` doesn't modify the info passed in. Make this
clear by adjusting the type signature.

Signed-off-by: Matthew Maurer <mmaurer@google.com>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>

kernel/module/main.c

@@ -1645,7 +1645,7 @@ bool __weak module_exit_section(const char *name)
 	return strstarts(name, ".exit");
 }
 
-static int validate_section_offset(struct load_info *info, Elf_Shdr *shdr)
+static int validate_section_offset(const struct load_info *info, Elf_Shdr *shdr)
 {
 #if defined(CONFIG_64BIT)
 	unsigned long long secend;