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.

We also fixup the timeouts in the PEC which HB won't do before GA3.

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

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