Bug#1055135: vkd3d: Please modify control for Loongarch support

[wuruilong]

Source: vkd3d
Version: 1.2-15
Followup-For: Bug #1055135
X-Debbugs-Cc: wuruil...@loongson.cn

Dear Maintainer,

I verified that the above patch compiles successfully on the loongarch 
platform, please merge the attached patch.

wuruilong