irq-urgent-2021-09-26

 - Work around a bad GIC integration on a Renesas platform which can't
   handle byte-sized MMIO access

 - Plug a potential memory leak in the GICv4 driver

 - Fix a regression in the Armada 370-XP IPI code which was caused by
   issuing EOI instack of ACK.

 - A couple of small fixes here and there