Add supported memory part in mem_parts_used.txt, then generate.
H54G56CYRBX247
BUG=b:199645942
TEST=run part_id_gen to generate SPD id
Change-Id: I2169d71695d8d133d26cafe5c7be33b976dd8603
Signed-off-by: Morris Hsu <morris-hsu@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83127
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Reviewed-by: Eric Lai <ericllai@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>