isdn: hfcsusb: Spelling and grammar fixes

Fix misspellings of "endpoints", "configuration", and "device's".
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/isdn/hardware/mISDN/hfcsusb.h

@@ -173,8 +173,8 @@ symbolic(struct hfcusb_symbolic_list list[], const int num)
 
 
 /*
- * List of all supported enpoints configiration sets, used to find the
- * best matching endpoint configuration within a devices' USB descriptor.
+ * List of all supported endpoint configuration sets, used to find the
+ * best matching endpoint configuration within a device's USB descriptor.
  * We need at least 3 RX endpoints, and 3 TX endpoints, either
  * INT-in and ISO-out, or ISO-in and ISO-out)
  * with 4 RX endpoints even E-Channel logging is possible