ath: Add a missing world regulatory domain 0x6C

Some customers use 0x6C world regulatory domain and this patch
adds the support.

Cc: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/regd_common.h b/drivers/net/wireless/ath/regd_common.h
index 5c2cfe6..24b5383 100644
--- a/drivers/net/wireless/ath/regd_common.h
+++ b/drivers/net/wireless/ath/regd_common.h
@@ -86,6 +86,7 @@
 	WOR9_WORLD = 0x69,
 	WORA_WORLD = 0x6A,
 	WORB_WORLD = 0x6B,
+	WORC_WORLD = 0x6C,
 
 	MKK3_MKKB = 0x80,
 	MKK3_MKKA2 = 0x81,
@@ -282,6 +283,7 @@
 	{WOR9_WORLD, NO_CTL, NO_CTL},
 	{WORA_WORLD, NO_CTL, NO_CTL},
 	{WORB_WORLD, NO_CTL, NO_CTL},
+	{WORC_WORLD, NO_CTL, NO_CTL},
 };
 
 static struct country_code_to_enum_rd allCountries[] = {