plfxlc: fix le16_to_cpu warning for beacon_interval

Fix the following sparse warnings:
drivers/net/wireless/purelifi/plfxlc/chip.c:36:31: sparse: expected unsigned short [usertype] beacon_interval
drivers/net/wireless/purelifi/plfxlc/chip.c:36:31: sparse: got restricted __le16 [usertype]

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Srinivasan Raju <srini.raju@purelifi.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220502150133.6052-1-srini.raju@purelifi.com

drivers/net/wireless/purelifi/plfxlc/chip.c

@@ -29,11 +29,10 @@ int plfxlc_set_beacon_interval(struct plfxlc_chip *chip, u16 interval,
 			       u8 dtim_period, int type)
 {
 	if (!interval ||
-	    (chip->beacon_set &&
-	     le16_to_cpu(chip->beacon_interval) == interval))
+	    (chip->beacon_set && chip->beacon_interval == interval))
 		return 0;
 
-	chip->beacon_interval = cpu_to_le16(interval);
+	chip->beacon_interval = interval;
 	chip->beacon_set = true;
 	return plfxlc_usb_wreq(chip->usb.ez_usb,
 			       &chip->beacon_interval,