staging: vt6655: Replace MACvTransmit0 with function vt6655_mac_dma_ctl

Convert macro MACvTransmit0 to existing static function. This saves
codelines and multiline macros are not liked by kernel community.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/fc412f0fda11045a55b6b5867d51e250ca841ee8.1659080988.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vt6655/device_main.c

@@ -1231,7 +1231,7 @@ static int vnt_tx_packet(struct vnt_private *priv, struct sk_buff *skb)
 	if (head_td->td_info->flags & TD_FLAGS_NETIF_SKB)
 		MACvTransmitAC0(priv->port_offset);
 	else
-		MACvTransmit0(priv->port_offset);
+		vt6655_mac_dma_ctl(priv->port_offset, MAC_REG_TXDMACTL0);
 
 	priv->iTDUsed[dma_idx]++;
 

drivers/staging/vt6655/mac.h

@@ -537,16 +537,6 @@
 
 /*---------------------  Export Macros ------------------------------*/
 
-#define MACvTransmit0(iobase)						\
-do {									\
-	unsigned long dwData;						\
-	dwData = ioread32(iobase + MAC_REG_TXDMACTL0);			\
-	if (dwData & DMACTL_RUN)					\
-		iowrite32(DMACTL_WAKE, iobase + MAC_REG_TXDMACTL0);	\
-	else								\
-		iowrite32(DMACTL_RUN, iobase + MAC_REG_TXDMACTL0);	\
-} while (0)
-
 #define MACvTransmitAC0(iobase)					\
 do {									\
 	unsigned long dwData;						\