iwlwifi: rate sacaling fixes

1. Fixing support for tx in antenna C
2. Enable stay_in_column expiration after 2 seconds

Signed-off-by: Guy Cohen <guy.cohen@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-4965-hw.h b/drivers/net/wireless/iwlwifi/iwl-4965-hw.h
index 0c132b9..4f45093 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965-hw.h
+++ b/drivers/net/wireless/iwlwifi/iwl-4965-hw.h
@@ -1356,9 +1356,9 @@
 {
 	return le32_to_cpu(rate_n_flags) & 0xFF;
 }
-static inline u16 iwl4965_hw_get_rate_n_flags(__le32 rate_n_flags)
+static inline u32 iwl4965_hw_get_rate_n_flags(__le32 rate_n_flags)
 {
-	return le32_to_cpu(rate_n_flags) & 0xFFFF;
+	return le32_to_cpu(rate_n_flags) & 0x1FFFF;
 }
 static inline __le32 iwl4965_hw_set_rate_n_flags(u8 rate, u16 flags)
 {