[ALSA] trivial warning fix for emu10k1

EMU10K1/EMU10K2 driver
When building with gcc -W sound/pci/emu10k1/emupcm.c produces this little
warning in 2.6.12-rc2-mm3 :
  sound/pci/emu10k1/emupcm.c:265: warning: 'inline' is not at beginning of
declaration
No big deal, but trivial to fix.

Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>