rockchip: rk3588: Map SCMI shared memory area as non-cacheable

rockchip: rk3588: Map SCMI shared memory area as non-cacheable

The SCMI shared memory area is no longer automatically marked as
non-cacheable after the commit a5a0134570c8 ("firmware: scmi: Drop
mmu_set_region_dcache_behaviour() misuse").

This change in behavior cause Rockchip RK3588 boards to fail boot with:

  SoC:   RK3588
  DRAM:  8 GiB
  scmi-over-smccc scmi: Channel unexpectedly busy
  scmi_base_drv scmi-base.0: getting protocol version failed
  scmi-over-smccc scmi: failed to probe base protocol
  initcall_run_r(): initcall initr_dm() failed
  ### ERROR ### Please RESET the board ###

Update the memory mapping on RK3588 to mark the SCMI shared memory area
as non-cacheable to fix the SCMI shared memory based transport issue
that prevented RK3588 boards from booting.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>