[PARISC] fix section mismatch warnings in harmony sound driver

fix for two warnings:
- Section mismatch: reference to .init.text:snd_harmony_mixer_init from .text.snd_harmony_probe after 'snd_harmony_probe'
- Section mismatch: reference to .init.text:snd_harmony_mixer_reset from .text.snd_harmony_mixer_init after 'snd_harmony_mixer_init'

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>