wifi: rtw88: Fix Sparse warning for rtw8723d_hw_spec

Sparse lists the following:

  CHECK   drivers/net/wireless/realtek/rtw88/rtw8723d.c
drivers/net/wireless/realtek/rtw88/rtw8723d.c:2704:22: warning: symbol 'rtw8723d_hw_spec' was not declared. Should it be static?

The warning arises because the external declaration for rtw8723d_hw_spec
occurs in rtw8723de.h, which is not included in rtw8723d.h. That line is
moved, and the now empty file rtw8723de.h is deleted.

Symbol 'rtw8723d_hw_spec' can be made constant.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220524153621.19027-4-Larry.Finger@lwfinger.net

drivers/net/wireless/realtek/rtw88/rtw8723d.c

@@ -2701,7 +2701,7 @@ static const struct rtw_reg_domain coex_info_hw_regs_8723d[] = {
 	{0x953, BIT(1), RTW_REG_DOMAIN_MAC8},
 };
 
-struct rtw_chip_info rtw8723d_hw_spec = {
+const struct rtw_chip_info rtw8723d_hw_spec = {
 	.ops = &rtw8723d_ops,
 	.id = RTW_CHIP_TYPE_8723D,
 	.fw_name = "rtw88/rtw8723d_fw.bin",

drivers/net/wireless/realtek/rtw88/rtw8723d.h

@@ -72,6 +72,8 @@ struct rtw8723d_efuse {
 	struct rtw8723de_efuse e;
 };
 
+extern const struct rtw_chip_info rtw8723d_hw_spec;
+
 /* phy status page0 */
 #define GET_PHY_STAT_P0_PWDB(phy_stat)                                         \
 	le32_get_bits(*((__le32 *)(phy_stat) + 0x00), GENMASK(15, 8))

drivers/net/wireless/realtek/rtw88/rtw8723de.c

@@ -5,7 +5,7 @@
 #include <linux/module.h>
 #include <linux/pci.h>
 #include "pci.h"
-#include "rtw8723de.h"
+#include "rtw8723d.h"
 
 static const struct pci_device_id rtw_8723de_id_table[] = {
 	{