objtool: Handle unsorted table offset of rodata

When compiling with Clang on LoongArch, there are unsorted table offset
of rodata if there exist many jump tables, it will get the wrong table
end and find the wrong jump destination instructions in add_jump_table(),
so it needs to check the table size of rodata to break the process when
parsing the relocation section of rodata.

This is preparation for later patch on LoongArch, there is no effect for
the other archs with this patch.

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: michael <michael5hzg@gmail.com>
Signed-off-by: maoxiaochuan <maoxiaochuan@loongson.cn>

tools/objtool/include/objtool/check.h

@@ -46,6 +46,7 @@ struct instruction {
 	struct section *sec;
 	unsigned long offset;
 	unsigned long immediate;
+	unsigned long table_size;
 
 	u8 len;
 	u8 prev_len;