The dwiic_init() routine is used at startup to read various chip

The dwiic_init() routine is used at startup to read various chip
registers, make some decisions, and then program other registers.  After
a resume, it is pointless, and potentially incorrect to read such registers
again, which a BIOS or something may not have initialized, and we are
better off using the remembered soft-state to init cleanly.  So craft a
custom block of chip restoration, and do it while the chip is stopped hard.
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