meta-phosphor: prep for new override syntax

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I588025b614416c43aa2d053765ab53bacf890cb5
diff --git a/meta-phosphor/aspeed-layer/recipes-kernel/cf-fsi-firmware/cf-fsi-firmware_git.bb b/meta-phosphor/aspeed-layer/recipes-kernel/cf-fsi-firmware/cf-fsi-firmware_git.bb
index d96a2ef..62819f2 100644
--- a/meta-phosphor/aspeed-layer/recipes-kernel/cf-fsi-firmware/cf-fsi-firmware_git.bb
+++ b/meta-phosphor/aspeed-layer/recipes-kernel/cf-fsi-firmware/cf-fsi-firmware_git.bb
@@ -25,4 +25,4 @@
 	install -m 0644 ${S}/dist-bin/cf-fsi-fw.bin ${D}${firmware_dir}
 }
 
-FILES_${PN} = "${firmware_dir}"
+FILES:${PN} = "${firmware_dir}"