ASoC: SOF: amd: Add acp-psp mailbox interface for iram-dram fence register modification

Add acp-psp mailbox communication interface for iram-dram size
modification to notify psp.

Signed-off-by: Venkata Prasad Potturu <venkataprasad.potturu@amd.com>
Link: https://msgid.link/r/20231219112416.3334928-5-venkataprasad.potturu@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>