Revert "pflash: bump version to v5.9.4"

This reverts commit 9786fd849e89c62c60d5a9a219ab3a472f4a6595.
Bumping skiboot to v5.9.4 introduced intermittent CI compile
fails.

open-power/skiboot#143

Change-Id: I2c75de877034036cb1552e2f5388a95ebe24eba0
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
1 file changed