binfmt_misc: fix shift-out-of-bounds in check_special_flags

In the Linux kernel, the following vulnerability has been resolved:

binfmt_misc: fix shift-out-of-bounds in check_special_flags

UBSAN reported a shift-out-of-bounds warning:

left shift of 1 by 31 places cannot be represented in type 'int'

Call Trace:

<TASK>

__dump_stack lib/dump_stack.c:88 [inline]

dump_stack_lvl+0x8d/0xcf lib/dump_stack.c:106

ubsan_epilogue+0xa/0x44 lib/ubsan.c:151

__ubsan_handle_shift_out_of_bounds+0x1e7/0x208 lib/ubsan.c:322

check_special_flags fs/binfmt_misc.c:241 [inline]

create_entry fs/binfmt_misc.c:456 [inline]

bm_register_write+0x9d3/0xa20 fs/binfmt_misc.c:654

vfs_write+0x11e/0x580 fs/read_write.c:582

ksys_write+0xcf/0x120 fs/read_write.c:637

do_syscall_x64 arch/x86/entry/common.c:50 [inline]

do_syscall_64+0x34/0x80 arch/x86/entry/common.c:80

entry_SYSCALL_64_after_hwframe+0x63/0xcd

RIP: 0033:0x4194e1

Since the type of Node's flags is unsigned long, we should define these

macros with same type too.