[][Add header for SiP service interface]

[Description]
Add a common header for the SiP service interface in MediaTek Chipsets.

[Release-log]
N/A

Change-Id: If257551be2d2827c84bdfa21c107abd714ceaf75
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/5404105
1 file changed