ASoC: wcd9304: Include all registers to debugfs dump.

The current dumps only include a small set of registers usefull
in most use cases. Make it exhautive by including the complete
register set.

CRs-Fixed: 402905
Change-Id: I4f826dc53f3cf9c8e0d520d7f1eb872f71c357de
Signed-off-by: Asish Bhattacharya <asishb@codeaurora.org>