Change in coreboot[master]: security/intel/cbnt/Makefile.inc: Use variables for hash alg

[Angel Pons (Code Review)]

Attention is currently required from: Martin Roth, Christian Walter, Arthur Heymans.
Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/51975 )

Change subject: security/intel/cbnt/Makefile.inc: Use variables for hash alg
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Patch Set 2: Code-Review+1

(3 comments)

File src/security/intel/cbnt/Makefile.inc:

https://review.coreboot.org/c/coreboot/+/51975/comment/95b9d497_a5fd4975 
PS2, Line 5: ®
Jenkins hates the ® for some reason.

https://review.coreboot.org/c/coreboot/+/51975/comment/e1ac08aa_c2642fba 
PS2, Line 6: 558294
document number 558294

https://review.coreboot.org/c/coreboot/+/51975/comment/b544a08e_72f3d076 
PS2, Line 8: PK_HASH_ALG_SHA1:=4
nit: keep the values numerically sorted?