Adding useful functions to setup all the configurable options in the
CODEC (not yet finished)

This reverts commit 8d8350bf07.

The address was wrongly put to 0x10 + the two hardware set bits, while
it has to be 10 decimal, or 0x0A. Silly me.

The PIN_PDN was not set as output, therefore it would not transition to
LOW for 150 ns and then stay HIGH to properly enable the CODEC. The
CODEC now powers up, at least.