media: netup_unidvb: Use min macro

Simplify the code.

Found by cocci:
drivers/media/pci/netup_unidvb/netup_unidvb_i2c.c:138:26-27: WARNING opportunity for min()

Link: https://lore.kernel.org/linux-media/20240429-fix-cocci-v3-15-3c4865f5a4b0@chromium.orgSigned-off-by: Ricardo Ribalda <ribalda@chromium.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/pci/netup_unidvb/netup_unidvb_i2c.c

@@ -135,7 +135,7 @@ static void netup_i2c_fifo_tx(struct netup_i2c *i2c)
 		(readw(&i2c->regs->tx_fifo.stat_ctrl) & 0x3f);
 	u32 msg_length = i2c->msg->len - i2c->xmit_size;
 
-	msg_length = (msg_length < fifo_space ? msg_length : fifo_space);
+	msg_length = min(msg_length, fifo_space);
 	while (msg_length--) {
 		data = i2c->msg->buf[i2c->xmit_size++];
 		writeb(data, &i2c->regs->tx_fifo.data8);