Change in coreboot[master]: soc/amd/common/block/psp: Add platform secure boot support

[Felix Held (Code Review)]

Attention is currently required from: Jason Glenesk, Raul Rangel, ritul guru, Marshall Dawson, Paul Menzel, Angel Pons, Aamir Bohra.
Felix Held has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/60968 )

Change subject: soc/amd/common/block/psp: Add platform secure boot support
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Patch Set 11:

(1 comment)

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

https://review.coreboot.org/c/coreboot/+/60968/comment/b6c57f96_c482d888 
PS11, Line 133: static enum cb_err psb_get_hsti_status(uint32_t *status)
this basically does the same as https://review.coreboot.org/c/coreboot/+/61462/5/src/soc/amd/common/block/ps... so it would be good to have a function for this in psp_gen2.c