Change in coreboot[master]: amdfwtool: Add options to separate signed firmwares

[Karthik Ramasubramanian (Code Review)]

Attention is currently required from: Jason Glenesk, Marshall Dawson, Kangheui Won, Felix Held.
Karthik Ramasubramanian has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/59866 )

Change subject: amdfwtool: Add options to separate signed firmwares
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Patch Set 2:

(1 comment)

File util/amdfwtool/amdfwtool.c:

https://review.coreboot.org/c/coreboot/+/59866/comment/0c6d3837_2f86f2c6 
PS2, Line 825: pspdir->entries[count].addr = fw_table[i].addr_signed;
             : 				bytes = fw_table[i].file_size;
Why is the address & size being tracked?

Same for unsigned firmware. I am seeing that the blob is copied into mirror buffer. If so, why is the address being tracked there?