nfc: mrvl: simplify with module_driver

Remove standard module init/exit boilerplate with module_driver() which
also annotates the functions with __init.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210531073902.7111-1-krzysztof.kozlowski@canonical.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/nfc/nfcmrvl/uart.c

@@ -189,23 +189,7 @@ static struct nci_uart nfcmrvl_nci_uart = {
 		.tx_done	= nfcmrvl_nci_uart_tx_done,
 	}
 };
-
-/*
-** Module init
-*/
-
-static int nfcmrvl_uart_init_module(void)
-{
-	return nci_uart_register(&nfcmrvl_nci_uart);
-}
-
-static void nfcmrvl_uart_exit_module(void)
-{
-	nci_uart_unregister(&nfcmrvl_nci_uart);
-}
-
-module_init(nfcmrvl_uart_init_module);
-module_exit(nfcmrvl_uart_exit_module);
+module_driver(nfcmrvl_nci_uart, nci_uart_register, nci_uart_unregister);
 
 MODULE_AUTHOR("Marvell International Ltd.");
 MODULE_DESCRIPTION("Marvell NFC-over-UART");