Add the information of substance and instance in the string for PMUI and PMUD. It is amdfwtool's job to extract the number from the string. Change-Id: I43235fefcbff5f730efaf0a8e70b906e62cee42e Signed-off-by: Zheng Bao <fishbaozi@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/62066 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Felix Held <felix-coreboot@felixheld.de>