Change in coreboot[master]: [WIP]amdfwtool: add support for A/B recovery

[Bao Zheng (Code Review)]

Attention is currently required from: Jason Glenesk, Raul Rangel, Marshall Dawson, Zheng Bao, Felix Held.
Bao Zheng has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/56773 )

Change subject: [WIP]amdfwtool: add support for A/B recovery
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Patch Set 1:

(6 comments)

File util/amdfwtool/amdfwtool.c:

https://review.coreboot.org/c/coreboot/+/56773/comment/6f2d7530_27c19957 
PS1, Line 1270: PLATFORM_MENDOCINO,
another patch.

https://review.coreboot.org/c/coreboot/+/56773/comment/fea3a337_54081f9d 
PS1, Line 1308: case PLATFORM_MENDOCINO:
another patch

https://review.coreboot.org/c/coreboot/+/56773/comment/a201450c_34ab7f9e 
PS1, Line 1345: else if (!strcasecmp(soc_name, "Mendocino"))
              : 		return PLATFORM_MENDOCINO;
Another patch.

https://review.coreboot.org/c/coreboot/+/56773/comment/06a6b4d1_a88a554f 
PS1, Line 1701: 0
NULL. Add below.

https://review.coreboot.org/c/coreboot/+/56773/comment/fc6b411b_6b68cf09 
PS1, Line 1760: add_psp_firmware_entry
Change to a more understanding name.
add_biosl2_to_pspl2_table

https://review.coreboot.org/c/coreboot/+/56773/comment/75cc7aba_e5caefc7 
PS1, Line 1780: case PLATFORM_MENDOCINO:
Move to new patch