[ALSA] Fix WM9705 AC97 patch build error

This patch fixes a build error (introduced by me) in ac97_patch.c wrt
WM9705 touchscreen.
 o Removed spurious '3D' from character after |= operation (0x3D is
ASCII for '=')
Signed-off-by: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

sound/pci/ac97/ac97_patch.c

@@ -481,7 +481,7 @@ int patch_wolfson05(struct snd_ac97 * ac97)
 	ac97->build_ops = &patch_wolfson_wm9705_ops;
 #ifdef CONFIG_TOUCHSCREEN_WM9705
 	/* WM9705 touchscreen uses AUX and VIDEO for touch */
-	ac97->flags |=3D AC97_HAS_NO_VIDEO | AC97_HAS_NO_AUX;
+	ac97->flags |= AC97_HAS_NO_VIDEO | AC97_HAS_NO_AUX;
 #endif
 	return 0;
 }