mISDN: comment out unused symbols

Fix this sparse warnings:

  drivers/isdn/hardware/mISDN/hfcmulti.c:794: warning: 'vpm_check' defined but not used
  drivers/isdn/mISDN/dsp_cmx.c:1546: warning: 'dsp_start_jiffies' defined but not used
Signed-off-by: NHannes Eder <hannes@hanneseder.net>
Acked-by: NKarsten Keil <kkeil@suse.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/isdn/hardware/mISDN/hfcmulti.c

@@ -788,6 +788,7 @@ vpm_init(struct hfc_multi *wc)
 	}
 }
 
+#ifdef UNUSED
 static void
 vpm_check(struct hfc_multi *hctmp)
 {
@@ -798,6 +799,7 @@ vpm_check(struct hfc_multi *hctmp)
 	if ((gpi2 & 0x3) != 0x3)
 		printk(KERN_DEBUG "Got interrupt 0x%x from VPM!\n", gpi2);
 }
+#endif /* UNUSED */
 
 
 /*

drivers/isdn/mISDN/dsp_cmx.c

@@ -1543,7 +1543,9 @@ dsp_cmx_send_member(struct dsp *dsp, int len, s32 *c, int members)
 static u32	samplecount;
 struct timer_list dsp_spl_tl;
 u32	dsp_spl_jiffies; /* calculate the next time to fire */
+#ifdef UNUSED
 static u32	dsp_start_jiffies; /* jiffies at the time, the calculation begins */
+#endif /* UNUSED */
 static struct timeval dsp_start_tv; /* time at start of calculation */
 
 void