[ALSA] make sound/pci/emu10k1/emu10k1.c:snd_emu10k1_resume() static

This patch makes the needlessly global snd_emu10k1_resume() static.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>