staging: rtl8723au: Call usb_write*() functions directly

This allows us to finally remove the ugly HAL interface for accessing
registers, and remove rtw_io.c

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/rtl8723au/include/usb_ops_linux.h b/drivers/staging/rtl8723au/include/usb_ops_linux.h
index 2950954..4b5b10c 100644
--- a/drivers/staging/rtl8723au/include/usb_ops_linux.h
+++ b/drivers/staging/rtl8723au/include/usb_ops_linux.h
@@ -32,5 +32,10 @@
 u8 rtl8723au_read8(struct rtw_adapter *padapter, u32 addr);
 u16 rtl8723au_read16(struct rtw_adapter *padapter, u32 addr);
 u32 rtl8723au_read32(struct rtw_adapter *padapter, u32 addr);
+int rtl8723au_write8(struct rtw_adapter *padapter, u32 addr, u8 val);
+int rtl8723au_write16(struct rtw_adapter *padapter, u32 addr, u16 val);
+int rtl8723au_write32(struct rtw_adapter *padapter, u32 addr, u32 val);
+int rtl8723au_writeN(struct rtw_adapter *padapter,
+		     u32 addr, u32 length, u8 *pdata);
 
 #endif