Change in coreboot[master]: soc/intel/common/cse: Helper function to set D0I3 for all HECI devices

[Arthur Heymans (Code Review)]

Attention is currently required from:  Felix Singer, Subrata Banik, Tim Wawrzynczak, Angel Pons, Nick Vaccaro, Patrick Rudolph, EricR Lai.
Arthur Heymans has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/60404 )

Change subject: soc/intel/common/cse: Helper function to set D0I3 for all HECI devices
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Patch Set 2:

(1 comment)

File src/soc/intel/common/block/cse/cse_eop.c:

https://review.coreboot.org/c/coreboot/+/60404/comment/9d7320e9_5b72f68b 
PS2, Line 17: /* SoC callback to set D0I3 for all HECI devices */
            : __weak void soc_heci_set_d0i3(void) { /* no-op */ }
Is the weak empty function meaningful on most SoC's or should it be implemented by all and this is just a placeholder?