mb/google/dedede/var/awasuki: Add ChangXin modules to RAM id table

Add ChangXin CXDB4CBAM-ML-A as id 2, resulting in the list below:

DRAM Part Name                 ID to assign
K4U6E3S4AB-MGCL                0 (0000)
K4UBE3D4AB-MGCL                1 (0001)
MT53E1G32D2NP-046 WT:B         1 (0001)
NT6AP512T32BL-J1               2 (0010)
NT6AP1024F32BL-J1              3 (0011)
CXDB4CBAM-ML-A                 2 (0010)

BUG=422906387
TEST=Use part_id_gen to generate related settings

Change-Id: Ia9c091975cca6442833d374d40e98299ed5f0f0d
Signed-off-by: Hualin Wei <weihualin@huaqin.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/88147
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-by: Eric Lai <ericllai@google.com>
Reviewed-by: Weimin Wu <wuweimin@huaqin.corp-partner.google.com>

src/mainboard/google/dedede/variants/awasuki/memory/Makefile.mk

@@ -6,5 +6,5 @@
 SPD_SOURCES =
 SPD_SOURCES += spd/lp4x/set-1/spd-1.hex      # ID = 0(0b0000)  Parts = K4U6E3S4AB-MGCL
 SPD_SOURCES += spd/lp4x/set-1/spd-3.hex      # ID = 1(0b0001)  Parts = K4UBE3D4AB-MGCL, MT53E1G32D2NP-046 WT:B
-SPD_SOURCES += spd/lp4x/set-1/spd-11.hex      # ID = 2(0b0010)  Parts = NT6AP512T32BL-J1
+SPD_SOURCES += spd/lp4x/set-1/spd-11.hex      # ID = 2(0b0010)  Parts = NT6AP512T32BL-J1, CXDB4CBAM-ML-A
 SPD_SOURCES += spd/lp4x/set-1/spd-12.hex      # ID = 3(0b0011)  Parts = NT6AP1024F32BL-J1

src/mainboard/google/dedede/variants/awasuki/memory/dram_id.generated.txt

@@ -9,3 +9,4 @@ K4UBE3D4AB-MGCL                1 (0001)
 MT53E1G32D2NP-046 WT:B         1 (0001)
 NT6AP512T32BL-J1               2 (0010)
 NT6AP1024F32BL-J1              3 (0011)
+CXDB4CBAM-ML-A                 2 (0010)

src/mainboard/google/dedede/variants/awasuki/memory/mem_parts_used.txt

@@ -15,3 +15,4 @@ K4UBE3D4AB-MGCL
 MT53E1G32D2NP-046 WT:B
 NT6AP512T32BL-J1
 NT6AP1024F32BL-J1
+CXDB4CBAM-ML-A