drivers/ocp/dmi: Add OCP_DMI driver for populating SMBIOS from IPMI FRU data

drivers/ocp/dmi: Add OCP_DMI driver for populating SMBIOS from IPMI FRU data

It implements the SMBIOS IPMI FRU mapping table defined in
https://www.opencompute.org/documents/facebook-xeon-motherboard-v31
22.3 SMBIOS FRU mapping table.
Mainboard needs to configure the correct values for FRU_DEVICE_ID and BMC_KCS_BASE.

For type 11 string 1 to 6 are common and implemented in this driver, the
rest are project dependent and can be added in the mainboard code.

Tested on OCP Tioga Pass.

Change-Id: I08c958dfad83216cd12545760a19d205efc2515b
Signed-off-by: Johnny Lin <johnny_lin@wiwynn.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40308
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Reviewed-by: Jonathan Zhang <jonzhang@fb.com>
Reviewed-by: Christian Walter <christian.walter@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>