Get assert and PEL log messages from HBRT to the correct priority
Get assert and PEL log messages from HBRT to the correct priority

(PR_CRIT and PR_ERR respectively)

Signed-off-by: Stewart Smith <ec31ab75ddf977353c8f660f92ea8b23f64aef25@linux.vnet.ibm.com>

ddstreet/skiboot,shenki/skiboot,shenki/skiboot,jk-ozlabs/skiboot,legoater/skiboot,apopple/skiboot,csmart/skiboot,legoater/skiboot,csmart/skiboot,apopple/skiboot,shenki/skiboot,mikey/skiboot,legoater/skiboot,apopple/skiboot,ddstreet/skiboot,cyrilbur-ibm/skiboot,neelegup/skiboot,stewart-ibm/skiboot,qemu/skiboot,cyrilbur-ibm/skiboot,open-power/skiboot,qemu/skiboot,open-power/skiboot,open-power/skiboot,jk-ozlabs/skiboot,neelegup/skiboot,cyrilbur-ibm/skiboot,shenki/skiboot,neelegup/skiboot,open-power/skiboot,qemu/skiboot,qemu/skiboot,legoater/skiboot,csmart/skiboot,qemu/skiboot,mikey/skiboot,shenki/skiboot,ddstreet/skiboot,jk-ozlabs/skiboot,legoater/skiboot,stewart-ibm/skiboot,open-power/skiboot,stewart-ibm/skiboot,mikey/skiboot