usb: gadget: uvc: Missing files for configfs interface

Commit 76e0da34 ("usb-gadget/uvc: use per-attribute show and store
methods") caused a stringification of an undefined macro argument "aname",
so three UVC parameters (streaming_interval, streaming_maxpacket and
streaming_maxburst) were named "aname".

Add the definition of "aname" to the main macro and name the filenames as
originaly intended.
Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

drivers/usb/gadget/function/uvc_configfs.c

@@ -2125,7 +2125,7 @@ static struct configfs_item_operations uvc_item_ops = {
 	.release		= uvc_attr_release,
 };
 
-#define UVCG_OPTS_ATTR(cname, conv, str2u, uxx, vnoc, limit)		\
+#define UVCG_OPTS_ATTR(cname, aname, conv, str2u, uxx, vnoc, limit)	\
 static ssize_t f_uvc_opts_##cname##_show(				\
 	struct config_item *item, char *page)				\
 {									\
@@ -2168,16 +2168,16 @@ end:									\
 	return ret;							\
 }									\
 									\
-UVC_ATTR(f_uvc_opts_, cname, aname)
+UVC_ATTR(f_uvc_opts_, cname, cname)
 
 #define identity_conv(x) (x)
 
-UVCG_OPTS_ATTR(streaming_interval, identity_conv, kstrtou8, u8, identity_conv,
-	       16);
-UVCG_OPTS_ATTR(streaming_maxpacket, le16_to_cpu, kstrtou16, u16, le16_to_cpu,
-	       3072);
-UVCG_OPTS_ATTR(streaming_maxburst, identity_conv, kstrtou8, u8, identity_conv,
-	       15);
+UVCG_OPTS_ATTR(streaming_interval, streaming_interval, identity_conv,
+	       kstrtou8, u8, identity_conv, 16);
+UVCG_OPTS_ATTR(streaming_maxpacket, streaming_maxpacket, le16_to_cpu,
+	       kstrtou16, u16, le16_to_cpu, 3072);
+UVCG_OPTS_ATTR(streaming_maxburst, streaming_maxburst, identity_conv,
+	       kstrtou8, u8, identity_conv, 15);
 
 #undef identity_conv