staging: vt6655: Rename variable bySIFS

Remove byte Type encoding "by" from variable name and replace camelcase
with snakecase

Fix checkpatch.pl error:
	CHECK: Avoid CamelCase: <bySIFS>
Signed-off-by: Gilbert Adikankwu <gilbertadikankwu@gmail.com>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/f75f308f187fa9a9e14bf25db006131e2dcda43b.1697927812.git.gilbertadikankwu@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vt6655/card.c

@@ -186,7 +186,7 @@ bool CARDbSetPhyParameter(struct vnt_private *priv, u8 bb_type)
 {
 	unsigned char cw_max_min = 0;
 	unsigned char slot = 0;
-	unsigned char bySIFS = 0;
+	unsigned char sifs = 0;
 	unsigned char byDIFS = 0;
 	int i;
 
@@ -195,20 +195,20 @@ bool CARDbSetPhyParameter(struct vnt_private *priv, u8 bb_type)
 		vt6655_mac_set_bb_type(priv->port_offset, BB_TYPE_11A);
 		bb_write_embedded(priv, 0x88, 0x03);
 		slot = C_SLOT_SHORT;
-		bySIFS = C_SIFS_A;
+		sifs = C_SIFS_A;
 		byDIFS = C_SIFS_A + 2 * C_SLOT_SHORT;
 		cw_max_min = 0xA4;
 	} else if (bb_type == BB_TYPE_11B) {
 		vt6655_mac_set_bb_type(priv->port_offset, BB_TYPE_11B);
 		bb_write_embedded(priv, 0x88, 0x02);
 		slot = C_SLOT_LONG;
-		bySIFS = C_SIFS_BG;
+		sifs = C_SIFS_BG;
 		byDIFS = C_SIFS_BG + 2 * C_SLOT_LONG;
 		cw_max_min = 0xA5;
 	} else { /* PK_TYPE_11GA & PK_TYPE_11GB */
 		vt6655_mac_set_bb_type(priv->port_offset, BB_TYPE_11G);
 		bb_write_embedded(priv, 0x88, 0x08);
-		bySIFS = C_SIFS_BG;
+		sifs = C_SIFS_BG;
 
 		if (priv->short_slot_time) {
 			slot = C_SLOT_SHORT;
@@ -233,7 +233,7 @@ bool CARDbSetPhyParameter(struct vnt_private *priv, u8 bb_type)
 		 * bcs TX_PE will reserve 3 us hardware's processing
 		 * time here is 2 us.
 		 */
-		bySIFS -= 3;
+		sifs -= 3;
 		byDIFS -= 3;
 		/*
 		 * TX_PE will reserve 3 us for MAX2829 A mode only, it is for
@@ -242,9 +242,9 @@ bool CARDbSetPhyParameter(struct vnt_private *priv, u8 bb_type)
 		 */
 	}
 
-	if (priv->bySIFS != bySIFS) {
-		priv->bySIFS = bySIFS;
-		iowrite8(priv->bySIFS, priv->port_offset + MAC_REG_SIFS);
+	if (priv->sifs != sifs) {
+		priv->sifs = sifs;
+		iowrite8(priv->sifs, priv->port_offset + MAC_REG_SIFS);
 	}
 	if (priv->byDIFS != byDIFS) {
 		priv->byDIFS = byDIFS;

drivers/staging/vt6655/device.h

@@ -181,7 +181,7 @@ struct vnt_private {
 	unsigned int	uCwMin;   /* Current CwMin */
 	unsigned int	uCwMax;   /* CwMax is fixed on 1023. */
 	/* PHY parameter */
-	unsigned char bySIFS;
+	unsigned char sifs;
 	unsigned char byDIFS;
 	unsigned char byEIFS;
 	unsigned char slot;