this isn't correct for verbs 0x18 and 0x19.
for all except Monroe, 0x18 should be 0x03a71011 (MIC1 port B) and 0x19 should be disabled (0x411111f0).
for Monroe, 0x18 is disabled and 0x19 is 0x03a11020 (MIC2 port F)
ref: original Chromium sources for the boards
Patch set 1:
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