It wasn't being included, because we remove these files
in Canoeboot's version of U-Boot.
However, rules for including them was still in the U-Boot
build logic, leading to build issues such as:
arch/x86/dts/.cherryhill.dtb.pre.tmp:206:10: fatal error: microcode/m01406c2220.dtsi: No such file or directory
206 | #include "microcode/m01406c2220.dtsi"
This happened when building x86 U-Boot payloads. This patch
fixes the issue.
Signed-off-by: Leah Rowe <info@minifree.org>