RTW88: Add rtw8703b and rtw8814a firmware

Signed-off-by: Patrick Yavitz <pyavitz@gmail.com>

rtw88/README

@@ -19,16 +19,28 @@ except that the device cannot be waken from the wireless NICs.
 
 Currently supported devices with corresponding firmwares:
 
+RTL8812AU
+    rtw8812a_fw.bin
+
+RTL8814AE/RTL8814AU
+    rtw8814a_fw.bin
+
+RTL8821AU
+    rtw8821a_fw.bin
+
 RTL8822BE
     rtw8822b_fw.bin
 
 RTL8821CE
     rtw8821c_fw.bin
 
-RTL8822CE / CS
+RTL8822CE
     rtw8822c_fw.bin
     rtw8822c_wow_fw.bin
 
 RTL8723DE
     rtw8723d_fw.bin
 
+RTL8723CS/RTL8703B
+    rtw8703b_fw.bin
+    rtw8703b_wow_fw.bin