kernel: properly guard the lantiq atm abi hack with an ifdef

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 46981

target/linux/generic/patches-3.18/652-atm_header_changes.patch

@@ -1,12 +1,14 @@
 --- a/include/uapi/linux/atm.h
 +++ b/include/uapi/linux/atm.h
-@@ -154,6 +154,9 @@
+@@ -154,6 +154,11 @@
  	unsigned int adtf      :10;     /* ACR Decrease Time Factor (10-bit) */
  	unsigned int cdf       :3;      /* Cutoff Decrease Factor (3-bit) */
          unsigned int spare     :9;      /* spare bits */ 
++#ifdef CONFIG_LANTIQ
 +	int		scr;		/* sustained rate in cells per second */
 +	int		mbs;		/* maximum burst size (MBS) in cells */
 +	int		cdv;		/* Cell delay varition */
++#endif
  };
  
  struct atm_qos {