wifi: ath11k: simplify the code with module_platform_driver

The init/exit() of driver only calls platform_driver_register/unregister,
it can be simpilfied with module_platform_driver.
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20230804091255.1347178-1-yangyingliang@huawei.com

drivers/net/wireless/ath/ath11k/ahb.c

@@ -1306,17 +1306,7 @@ static struct platform_driver ath11k_ahb_driver = {
 	.shutdown = ath11k_ahb_shutdown,
 };
 
-static int ath11k_ahb_init(void)
-{
-	return platform_driver_register(&ath11k_ahb_driver);
-}
-module_init(ath11k_ahb_init);
-
-static void ath11k_ahb_exit(void)
-{
-	platform_driver_unregister(&ath11k_ahb_driver);
-}
-module_exit(ath11k_ahb_exit);
+module_platform_driver(ath11k_ahb_driver);
 
 MODULE_DESCRIPTION("Driver support for Qualcomm Technologies 802.11ax WLAN AHB devices");
 MODULE_LICENSE("Dual BSD/GPL");