Merge tag 'riscv-soc-for-v6.4' of https://git.kernel.org/pub/scm/linux/kernel/git...

Merge tag 'riscv-soc-for-v6.4' of https://git./linux/kernel/git/conor/linux into soc/drivers

RISC-V SoC drivers for v6.4

Microchip:
Mailbox controller & client changes for the system controller on
PolarFire SoC. The controller bits have been acked by Jassi.
Primarily the changes work around a "hardware" bug (really the system
controller's software, but it may as well be hardware as customers
cannot change it) where interrupts are not generated if a service fails.
The mailbox controller driver is tweaked to use polling, rather than
interrupt, mode and there are some changes to timeout code required in
the client driver as a result. There's some opportunistic cleanup that I
performed while doing the swap too.

Canaan:
A single fix for some randconfig issues that crop up when !mmu is
enabled for 32-bit kernels, due to my changes in a previous release that
swapped out select based entablement of the driver.

Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
* tag 'riscv-soc-for-v6.4' of https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux:
  soc: microchip: mpfs: add a prefix to rx_callback()
  soc: microchip: mpfs: handle timeouts and failed services differently
  soc: microchip: mpfs: simplify error handling in mpfs_blocking_transaction()
  soc: microchip: mpfs: use a consistent completion timeout
  soc: microchip: mpfs: fix some horrible alignment
  mailbox: mpfs: check the service status in .tx_done()
  mailbox: mpfs: ditch a useless busy check
  mailbox: mpfs: switch to txdone_poll
  mailbox: mpfs: fix an incorrect mask width
  soc: canaan: Make K210_SYSCTL depend on CLK_K210

Link: https://lore.kernel.org/r/20230406-islamist-mop-81d651b8830d@spud
Signed-off-by: Arnd Bergmann <arnd@arndb.de>