[M] Change in coreboot[master]: vboot: Add VBOOT_CBFS_INTEGRATION support

[Jakub Czapiga (Code Review)]

Attention is currently required from: Hung-Te Lin, Jason Glenesk, Raul Rangel, Matt DeVillier, Eric Lai, Fred Reitberger, Yu-Ping Wu, Felix Held.

Jakub Czapiga has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/66909 )

Change subject: vboot: Add VBOOT_CBFS_INTEGRATION support
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Patch Set 21:

(2 comments)

File src/security/vboot/vboot_common.c:

https://review.coreboot.org/c/coreboot/+/66909/comment/f0417e82_dd843298 
PS20, Line 73: void vboot_save_and_reboot(struct vb2_context *ctx, uint8_t subcode)
> Can we split vboot_save_and_reboot and vboot_fail_and_reboot to another CL? Look more clear for the  […]

Done. Please take a look at CB:69208

https://review.coreboot.org/c/coreboot/+/66909/comment/544d209f_0e3e9d96 
PS20, Line 84: if (ctx == NULL) {
             : 		printk(BIOS_ERR, "Failed to get vboot context\n");
             : 		goto fail;
             : 	}
> This is actually impossible to happen by the logic of `vboot_get_context`. […]

Thanks!