mb/google/volteer: Switch to using auto-generated SPDs

This change switches volteer and family to using auto-generated SPDs
obtained using gen_spd.go and gen_part_id.go.

BUG=b:147321551,b:155423877

Change-Id: I9ed48f0b51714b072a0459d0b70b5417a49db54f
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41618
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
diff --git a/src/mainboard/google/volteer/Makefile.inc b/src/mainboard/google/volteer/Makefile.inc
index f66c520..c01f993 100644
--- a/src/mainboard/google/volteer/Makefile.inc
+++ b/src/mainboard/google/volteer/Makefile.inc
@@ -20,7 +20,7 @@
 
 VARIANT_DIR:=$(call strip_quotes,$(CONFIG_VARIANT_DIR))
 subdirs-y += variants/$(VARIANT_DIR)
-subdirs-y += variants/$(VARIANT_DIR)/spd
+subdirs-y += variants/$(VARIANT_DIR)/memory
 CPPFLAGS_common += -I$(src)/mainboard/$(MAINBOARDDIR)/variants/$(VARIANT_DIR)/include
 
 subdirs-y += spd
diff --git a/src/mainboard/google/volteer/spd/Makefile.inc b/src/mainboard/google/volteer/spd/Makefile.inc
index 5891b6d..e125994 100644
--- a/src/mainboard/google/volteer/spd/Makefile.inc
+++ b/src/mainboard/google/volteer/spd/Makefile.inc
@@ -4,7 +4,7 @@
 ifneq ($(SPD_SOURCES),)
 SPD_BIN = $(obj)/spd.bin
 
-SPD_DEPS := $(foreach f, $(SPD_SOURCES), src/mainboard/$(MAINBOARDDIR)/variants/$(VARIANT_DIR)/spd/$(f).spd.hex)
+SPD_DEPS := $(foreach f, $(SPD_SOURCES), src/soc/intel/tigerlake/spd/lp4x/$(f))
 
 # Include spd ROM data
 $(SPD_BIN): $(SPD_DEPS)
diff --git a/src/mainboard/google/volteer/variants/halvor/Makefile.inc b/src/mainboard/google/volteer/variants/halvor/Makefile.inc
index b1e4c9a..13269db 100644
--- a/src/mainboard/google/volteer/variants/halvor/Makefile.inc
+++ b/src/mainboard/google/volteer/variants/halvor/Makefile.inc
@@ -1,9 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0-only
 
-## Memory Options                                      # DRAM ID  # Part Num
-SPD_SOURCES = SPD_LPDDR4X_556b_1R_32Gb_8GbD_QDP_4267   # b0000    # H9HKNNNCRMBVAR-NEH
-SPD_SOURCES += SPD_LPDDR4X_556b_1R_64Gb_16GbD_QDP_4267 # b0001    # MT53E1G64D4SQ-046 WT:A
-
 bootblock-y += gpio.c
 
 ramstage-y += gpio.c
diff --git a/src/mainboard/google/volteer/variants/malefor/Makefile.inc b/src/mainboard/google/volteer/variants/malefor/Makefile.inc
index 44beb90..343c7db 100644
--- a/src/mainboard/google/volteer/variants/malefor/Makefile.inc
+++ b/src/mainboard/google/volteer/variants/malefor/Makefile.inc
@@ -1,8 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0-only
 
-## Memory Options					  # DRAM ID  # Part Num
-SPD_SOURCES = SPD_LPDDR4X_200b_8bank_1Rx16_16Gb_DDP_4267  # 0b0000   # MT53E512M32D2NP-046
-
 romstage-y += memory.c
 
 bootblock-y += gpio.c
diff --git a/src/mainboard/google/volteer/variants/ripto/Makefile.inc b/src/mainboard/google/volteer/variants/ripto/Makefile.inc
index 02b6f51..13269db 100644
--- a/src/mainboard/google/volteer/variants/ripto/Makefile.inc
+++ b/src/mainboard/google/volteer/variants/ripto/Makefile.inc
@@ -1,8 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0-only
 
-## Memory Options					  # DRAM ID  # Part Num
-SPD_SOURCES = SPD_LPDDR4X_200b_8bank_1Rx16_16Gb_DDP_4267  # 0b0000   # K4U6E3S4AA-MGCL
-
 bootblock-y += gpio.c
 
 ramstage-y += gpio.c
diff --git a/src/mainboard/google/volteer/variants/volteer/Makefile.inc b/src/mainboard/google/volteer/variants/volteer/Makefile.inc
deleted file mode 100644
index 2cf0adc..0000000
--- a/src/mainboard/google/volteer/variants/volteer/Makefile.inc
+++ /dev/null
@@ -1,8 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-or-later
-
-## Memory Options					  # DRAM ID  # Part Num
-SPD_SOURCES = SPD_LPDDR4X_200b_1R_16Gb_DDP_4267		  # 0b0000   # K4U6E3S4AA-MGCL
-#							  # 0b0000   # H9HCNNNBKMMLXR-NEE
-SPD_SOURCES += SPD_LPDDR4X_200b_8bank_2Rx16_32Gb_DDP_4267 # 0b0001   # K4UBE3D4AA-MGCL
-SPD_SOURCES += SPD_LPDDR4X_200b_2R_32Gb_QDP_4267	  # 0b0010   # MT53E1G32D2NP-046 WT:A
-SPD_SOURCES += SPD_LPDDR4X_200b_2R_64Gb_ODP_4267	  # 0b0011   # H9HCNNNFAMMLXR-NEE