commonlib/mem_chip_info: Add clarifying documentation comments
This patch just adds some comments to the recently merged mem_chip_info
struct for communicating memory type information to the payload/OS, to
clarify the expected format in which values are to be written into the
fields.
Signed-off-by: Julius Werner <jwerner@chromium.org>
Change-Id: I2c28b3bdcdb13b7f270fb87a8f06e2cf448cddec
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63944
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Shelley Chen <shchen@google.com>