mb/google/dedede/var/wheelie: Use auto-generated Makefile.inc using gen_part_id.go

mb/google/dedede/var/wheelie: Use auto-generated Makefile.inc using gen_part_id.go

This change adds mem_list_variant.txt that contains the list of
memory parts used by wheelie and Makefile.inc generated by
gen_part_id.go using mem_list_variant.txt.

In the final change of the series, all dedede variants will be
switched from using the current SPDs to new auto-generated SPDs.

Differences in auto-generated SPD from current SPD are as follows:
Part: MT53E512M32D2NP-046 WT:E
Byte#    Current     New         Explanation
4        0x15        0x16        This part has only 1 die. Hence,
                                 density per die is 16Gb.
6        0x90        0x04        1 die in package and 2 channels per
                                 die.
9        0x40        0x00        Unused by MRC.
19       0x0F        0xFF        As per JEDEC spec, tckMax should be
                                 100ns. So, value should be 0xFF as
                                 per datasheet.
123      0x00        0xE5        Fine offset for taa. Expected value
                                 is 0xE5 as per datasheet.
125      0xE1        0xE0        Fine offset for tckMin. As per
                                 datasheet tckMin is 0.468ns. So, this
                                 comes out to be 0xE0.
Additionally, manufacturer name bytes are set to 0.

Change-Id: If307bfb1d376e32af08af4f020f9e125f6a415dd
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41879
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>