Make HB a lot quieter on boot, set log priority in core/hostservices.c
Make HB a lot quieter on boot, set log priority in core/hostservices.c

Many things can just be PR_DEBUG, a few PR_INFO

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

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