[SERIAL] uart_port flags member should use UPF_*

Convert usage of ASYNC_* to UPF_*.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/ppc/platforms/4xx/luan.c b/arch/ppc/platforms/4xx/luan.c
index a94683a..21d2913 100644
--- a/arch/ppc/platforms/4xx/luan.c
+++ b/arch/ppc/platforms/4xx/luan.c
@@ -280,7 +280,7 @@
 	port.uartclk = clocks.uart0;
 	port.regshift = 0;
 	port.iotype = UPIO_MEM;
-	port.flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST;
+	port.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
 	port.line = 0;
 
 	if (early_serial_setup(&port) != 0) {