external/pflash: Fix ccpcheck warnings in progress.c
external/pflash: Fix ccpcheck warnings in progress.c

Warnings in progress.c are not critical but warn about %d being used in printf
format string when the parameter passed is unsigned.

Trivial fixup which should silence the warnings.

Signed-off-by: Cyril Bur <6ce38dade8c4b52fd55c193fae70fd1d1275c3c3@au1.ibm.com>
Signed-off-by: Stewart Smith <ec31ab75ddf977353c8f660f92ea8b23f64aef25@linux.vnet.ibm.com>

legoater/skiboot,qemu/skiboot,mikey/skiboot,open-power/skiboot,mikey/skiboot,stewart-ibm/skiboot,mikey/skiboot,legoater/skiboot,legoater/skiboot,legoater/skiboot,qemu/skiboot,open-power/skiboot,qemu/skiboot,open-power/skiboot,open-power/skiboot,stewart-ibm/skiboot,shenki/skiboot,qemu/skiboot,shenki/skiboot,stewart-ibm/skiboot,open-power/skiboot,shenki/skiboot,shenki/skiboot,shenki/skiboot,qemu/skiboot,legoater/skiboot