Change in coreboot[master]: intel/xeon_sp/util: Use get_stack_busno instead of get_cpubusnos

[Jonathan Zhang (Code Review)]

Attention is currently required from: Marc Jones, Maxim Polyakov, Angel Pons, Patrick Rudolph.
Jonathan Zhang has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/49458 )

Change subject: intel/xeon_sp/util: Use get_stack_busno instead of get_cpubusnos
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Patch Set 9:

(1 comment)

File src/soc/intel/xeon_sp/util.c:

https://review.coreboot.org/c/coreboot/+/49458/comment/656499a7_04535dd2 
PS9, Line 34: 	bus1 = get_stack_busno(1);
get_cpubusnos() is not used anymore. Should we combine with [CB:49459]?