[ALSA] ifdef typos: sound_isa_es18xx.c

ES18xx driver
Changed CONFIG_PNP_ to CONFIG_PNP, also fixed a comment related to
another CONFIG_PNP.
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/isa/es18xx.c

@@ -1849,7 +1849,7 @@ static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_ISAPNP; /* Enable this car
 static int isapnp[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
 #endif
 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;	/* 0x220,0x240,0x260,0x280 */
-#ifndef CONFIG_PNP_
+#ifndef CONFIG_PNP
 static long mpu_port[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -1};
 #else
 static long mpu_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
@@ -1988,7 +1988,7 @@ static int __devinit snd_audiodrive_pnp(int dev, struct snd_audiodrive *acard,
 	kfree(cfg);
 	return 0;
 }
-#endif /* CONFIG_PNP_ */
+#endif /* CONFIG_PNP */
 
 static int __devinit snd_audiodrive_probe(int dev, struct pnp_card_link *pcard,
 					  const struct pnp_card_device_id *pid)