pull-ppc-20220112

Cédric Le Goater

@legoater

f83460bb · ppc/pnv: use stack->pci_regs[] in pnv_pec_stk_pci_xscom_write() · Jan 12, 2022

ppc 7.0 queue:

* New SLOF for PPC970 and POWER5+ (Alexey)
* Fixes for POWER5+ pseries (Cedric)
* Updates of documentation (Leonardo and Thomas)
* First step of exception model cleanup (Fabiano)
* User created PHB3/PHB4 devices (Daniel and Cedric)