dahdi.rules: Replace SYSFS with ATTRS

SYSFS has been deprecated. Use ATTRS.

Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
Acked-by: Shaun Ruffell <sruffell@digium.com>
Acked-by: Russ Meyerriecks <rmeyerriecks@digium.com>

dahdi.rules

@@ -8,8 +8,8 @@ SUBSYSTEM=="dahdi",		OWNER="asterisk", GROUP="asterisk", MODE="0660"
 SUBSYSTEM=="dahdi_channels",	SYMLINK+="dahdi/%m"
 
 # Add persistant names as well
-SUBSYSTEM=="dahdi_channels", SYSFS{hardware_id}!="",	SYMLINK+="dahdi/devices/%s{hardware_id}/%s{local_spanno}/%n"
-SUBSYSTEM=="dahdi_channels", SYSFS{location}!="",	SYMLINK+="dahdi/devices/@%s{location}/%s{local_spanno}/%n"
+SUBSYSTEM=="dahdi_channels", ATTRS{hardware_id}!="",	SYMLINK+="dahdi/devices/%s{hardware_id}/%s{local_spanno}/%n"
+SUBSYSTEM=="dahdi_channels", ATTRS{location}!="",	SYMLINK+="dahdi/devices/@%s{location}/%s{local_spanno}/%n"
 
 LABEL="dahdi_add_end"