skiboot 5.1.19 release notes
skiboot 5.1.19 release notes

(cherry picked from 5.1.x commit fc479923ff2028c4efaa8d3e1a8a45c7c9f74e60)
Signed-off-by: Stewart Smith <ec31ab75ddf977353c8f660f92ea8b23f64aef25@linux.vnet.ibm.com>

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