Function hp_bseries_system() is always used, outside of
CONFIG_ boundaries/controls, so move it.

sound/pci/hda/patch_sigmatel.c:5458: error: implicit declaration of function 'hp_bseries_system'
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>