orinoco: orinoco_plx use msecs_to_jiffies for conversion

This is only an API consolidation and should make things more readable
it replaces var * HZ / 1000 by msecs_to_jiffies(var).
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/orinoco/orinoco_plx.c

@@ -121,7 +121,7 @@ static int orinoco_plx_cor_reset(struct orinoco_private *priv)
 	mdelay(1);
 
 	/* Just in case, wait more until the card is no longer busy */
-	timeout = jiffies + (PLX_RESET_TIME * HZ / 1000);
+	timeout = jiffies + msecs_to_jiffies(PLX_RESET_TIME);
 	reg = hermes_read_regn(hw, CMD);
 	while (time_before(jiffies, timeout) && (reg & HERMES_CMD_BUSY)) {
 		mdelay(1);