Blackfin arch: flags of UART3 mem resource is missing

Signed-off-by: NSonic Zhang <sonic.zhang@analog.com>
Signed-off-by: NBryan Wu <cooloney@kernel.org>

arch/blackfin/mach-bf548/boards/cm_bf548.c

@@ -172,6 +172,7 @@ static struct resource bfin_uart_resources[] = {
 	{
 		.start = 0xFFC03100,
 		.end = 0xFFC031FF,
+		.flags = IORESOURCE_MEM,
 	},
 #endif
 };