This patch is for enableing cache in SCP. There is not enough space
on the SRAM of SCP. We need to run programs in DRAM. The DRAM power
and latency is much larger than SRAM, so cache is used to mitigate
the negative effects for performance. we set SCP registers for cache
size before loading SCP FW. (8KB+8KB) and also adjust ipi_buf_offset
in SRAM from 0x7bdb0 to 0x3BDB0 for enableing cache.
This patch was tested on MediaTek mt8186.
Signed-off-by: Allen-KH Cheng <allen-kh.cheng@xxxxxxxxxxxx>