rtw89: handle 6G band if supported by a chipset

For next chipset which can support 6G band, we add the handling
of ieee80211_supported_band for 6G band in advance. And a bitmap,
support_bands, is added to rtw89_chip_info to declare which
NL80211_BAND_* are supported. With the chipset's declaration,
we register the corresponding instances of ieee80211_supported_band
with wiphy.
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/20220113011042.6705-1-pkshih@realtek.com

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

@@ -203,6 +203,7 @@ enum rtw89_port {
 enum rtw89_band {
 	RTW89_BAND_2G = 0,
 	RTW89_BAND_5G = 1,
+	RTW89_BAND_6G = 2,
 	RTW89_BAND_MAX,
 };
 
@@ -568,6 +569,7 @@ struct rtw89_channel_params {
 	u8 primary_chan;
 	u8 bandwidth;
 	u8 pri_ch_idx;
+	u8 band_type;
 };
 
 struct rtw89_channel_help_params {
@@ -2204,6 +2206,7 @@ struct rtw89_chip_info {
 	const struct rtw89_hfc_param_ini *hfc_param_ini;
 	const struct rtw89_dle_mem *dle_mem;
 	u32 rf_base_addr[2];
+	u8 support_bands;
 	u8 rf_path_num;
 	u8 tx_nss;
 	u8 rx_nss;

drivers/net/wireless/realtek/rtw89/rtw8852a.c

@@ -2022,6 +2022,8 @@ const struct rtw89_chip_info rtw8852a_chip_info = {
 	.txpwr_factor_rf	= 2,
 	.txpwr_factor_mac	= 1,
 	.dig_table		= &rtw89_8852a_phy_dig_table,
+	.support_bands		= BIT(NL80211_BAND_2GHZ) |
+				  BIT(NL80211_BAND_5GHZ),
 	.rf_path_num		= 2,
 	.tx_nss			= 2,
 	.rx_nss			= 2,