rtw89: add UK to regulation type

Add RTW89_UK to enum rtw89_regulation_type.
The follow-up commit will configure the corresponding values for it
to TX power tables.

Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220318023214.32411-2-pkshih@realtek.com

drivers/net/wireless/realtek/rtw89/core.h

@@ -446,6 +446,7 @@ enum rtw89_regulation_type {
 	RTW89_UKRAINE	= 11,
 	RTW89_CN	= 12,
 	RTW89_QATAR	= 13,
+	RTW89_UK	= 14,
 	RTW89_REGD_NUM,
 };