PS3: gelic: Add support for separate cipher selection

From version 2.20 of the PS3 system software, the hypervisor allows
the guest OSes to specify separate cipher for group and pairwise.
Signed-off-by: NMasakazu Mokuno <mokuno@sm.sony.co.jp>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/ps3_gelic_wireless.c

@@ -87,7 +87,7 @@ static inline int wpa2_capable(void)
 
 static inline int precise_ie(void)
 {
-	return 0; /* FIXME */
+	return (0 <= ps3_compare_firmware_version(2, 2, 0));
 }
 /*
  * post_eurus_cmd helpers