Change in coreboot[master]: soc/amd/common/block/psp: add PSP command

[Jason Glenesk (Code Review)]

Attention is currently required from: Jason Glenesk, Raul Rangel, Marshall Dawson, Mohan Viswanathan, Name of user not set #1004133, Al Hirani, Avinash Alevoor, Rob Barnes, Fred Reitberger, Felix Held.
Jason Glenesk has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/61462 )

Change subject: soc/amd/common/block/psp: add PSP command
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Patch Set 6:

(3 comments)

File src/soc/amd/common/block/psp/Kconfig:

https://review.coreboot.org/c/coreboot/+/61462/comment/faa68add_65470337 
PS5, Line 34: 	select SOC_AMD_COMMON_BLOCK_PSP
> this shouldn't be selected here. […]

Done

File src/soc/amd/common/block/psp/psp.c:

https://review.coreboot.org/c/coreboot/+/61462/comment/faada60c_9a92d2e4 
PS5, Line 80: BOOT_STATE_INIT_ENTRY(BS_PAYLOAD_BOOT, BS_ON_ENTRY,
            : 		psp_set_spl_fuse, NULL);
> this should be moved to the psp_gen2 file which also avoids having to make this function visible out […]

Done

File src/soc/amd/common/block/psp/psp_def.h:

https://review.coreboot.org/c/coreboot/+/61462/comment/c00b23a1_4795fc5c 
PS5, Line 30: #define CORE_2_PSP_MSG_38_FUSE_SPL		0x00001000
> at least for me this would be easier to read if it was in the BIT(x) or (1 << x) form

Done