soc/amd/common/acp: introduce acp_gen1

Refactor existing acp code into acp_gen1 variant as preparation for gen2
variant in sabrina.

Change-Id: Id9248584237196b5404b79d3a8552cb90fe4491e
Signed-off-by: Fred Reitberger <reitbergerfred@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61831
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
diff --git a/src/soc/amd/picasso/Kconfig b/src/soc/amd/picasso/Kconfig
index 558f301..b2ebabb 100644
--- a/src/soc/amd/picasso/Kconfig
+++ b/src/soc/amd/picasso/Kconfig
@@ -27,7 +27,7 @@
 	select HAVE_ACPI_TABLES
 	select HAVE_EM100_SUPPORT
 	select SOC_AMD_COMMON
-	select SOC_AMD_COMMON_BLOCK_ACP
+	select SOC_AMD_COMMON_BLOCK_ACP_GEN1
 	select SOC_AMD_COMMON_BLOCK_ACPI
 	select SOC_AMD_COMMON_BLOCK_ACPIMMIO
 	select SOC_AMD_COMMON_BLOCK_ACPI_ALIB