Add new memory parts in memory_parts_used.txt and generate SPD id for
these parts:
Samsung K4U6E3S4AA-MGCL
BUG=b:204014463
TEST=run part_id_gen to generate SPD id
Change-Id: Icb0f211508450b16b2e5d214ae6adc9852718a59
Signed-off-by: Robert Chen <robert.chen@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59642
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>