ath9k: fix 5 ghz frequency selection on ar934x devices with 25 mhz refclock

SVN-Revision: 32705

package/mac80211/patches/575-ath9k_fix_25mhz_freq_sel.patch

+--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c
++++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
+@@ -117,8 +117,8 @@ static int ar9003_hw_set_channel(struct 
+ 		    ah->is_clk_25mhz) {
+ 			u32 chan_frac;
+ 
+-			channelSel = (freq * 2) / 75;
+-			chan_frac = (((freq * 2) % 75) * 0x20000) / 75;
++			channelSel = freq / 75;
++			chan_frac = ((freq % 75) * 0x20000) / 75;
+ 			channelSel = (channelSel << 17) | chan_frac;
+ 		} else {
+ 			channelSel = CHANSEL_5G(freq);