[M] Change in coreboot[main]: mb/google/brox: Remove Platform(PSys) related implementation

[Sowmya Aralguppe (Code Review)]

Attention is currently required from: Ashish Kumar Mishra.

Sowmya Aralguppe has posted comments on this change by Sowmya Aralguppe. ( https://review.coreboot.org/c/coreboot/+/84397?usp=email )

Change subject: mb/google/brox: Remove Platform(PSys) related implementation
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Patch Set 3:

(2 comments)

File src/mainboard/google/brox/variants/baseboard/include/baseboard/variants.h:

https://review.coreboot.org/c/coreboot/+/84397/comment/b711da87_92301305?usp... :
PS3, Line 58: struct psys_config {
> Please update this struct reference in other brox variants, as well. Such as variants/jubilant. […]

psys_config and psys_pl2 power are not used in any Brox variant

https://review.coreboot.org/c/coreboot/+/84397/comment/f62acf10_e2b513df?usp... :
PS3, Line 82: void variant_update_psys_power_limits(const struct cpu_power_limits *limits,
> Please update this function call reference in other brox variants, as well. […]

https://review.coreboot.org/c/coreboot/+/84219 - this function is not called in Jubilant .The patch is already merged