Change in coreboot[master]: amdfwtool: clean up psp fw parsing

[Kangheui Won (Code Review)]

Attention is currently required from: Karthik Ramasubramanian, Felix Held.
Kangheui Won has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/59449 )

Change subject: amdfwtool: clean up psp fw parsing
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Patch Set 4:

(2 comments)

File util/amdfwtool/data_parse.c:

https://review.coreboot.org/c/coreboot/+/59449/comment/f785146b_51aa1e67 
PS2, Line 110: psp_dir_valid_entries
> That's totally reasonable, I just wanted to check that this kind of refactoring would be acceptable  […]

Done in CB:59584

https://review.coreboot.org/c/coreboot/+/59449/comment/a7b2eb60_d445c755 
PS2, Line 178: if (strcmp(fw_name, "PSPBTLDR_WL_FILE") == 0) {
             : 		if (!cb_config->have_whitelist)
             : 			fw_type = AMD_FW_SKIP;
             : 	}
> Yes that is on my mind for next cleanup, but again I didn't want it to be in this CL for keep this C […]

Done in CB:59583