soc: amd: acp_6_0: add support for AMD ACP_6_0 soc.

Add a common part for AMD board ACP_6_0_ADSP.

Add support for ACP_6_0_ADSP BOARD,
which represents ACP_6_0 soc.

This has a 1 Xtensa HiFi5 core, with 200-800MHz
1.75 MB HP SRAM / 512 KB IRAM/DRAM,
1 x SP (I2S, PCM), 1 x BT (I2S, PCM), 1 x HS(I2S, PCM), DMIC as
audio interfaces.

Signed-off-by: DineshKumar Kalva <DineshKumar.Kalva@amd.com>