opal-prd: Add occ reset to usage text
opal-prd: Add occ reset to usage text

Signed-off-by: Jeremy Kerr <68a658b44bbaefab3ef5cd231967195fc0ff9d69@ozlabs.org>
Signed-off-by: Stewart Smith <ec31ab75ddf977353c8f660f92ea8b23f64aef25@linux.vnet.ibm.com>

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