[][spi: spi-mt65xx: Fix driver upstream code conflict]

[Description]
Fix driver upstream code conflict.

[Release-log]
N/A

Change-Id: Iada92c49c1d27b1d30be90fef0b40c2ee9dd91da
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/5612844
1 file changed