cfi fixed

From: Mori Hiroki <yamori813_at_yahoo.co.jp>
Date: Mon, 05 Feb 2024 06:10:12 UTC
Hi

I do remote update on mips module used on reroot.

This is write uboot image to flash.

I fixed write to cfi flash. 

https://github.com/ZRouter/freebsd-src/commit/477cb1845916d336b61620afd5064abd226f0be1

Thanks

Hiroki Mori