phb3: Increase some timeouts (SW283991)
phb3: Increase some timeouts (SW283991)

This increase various timeouts as per CQ SW283991 which should help
with some external drawers and GPUs.

Signed-off-by: Benjamin Herrenschmidt <a7089bb6e7e92505d88aaff006cbdd60cc9120b6@kernel.crashing.org>

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