ARM: OMAP4: Add UART4 support

This patch adds UART4 support on OMAP4430 development platform.
Signed-off-by: Syed Rafiuddin <rafiuddin.syed@ti.com>

arch/arm/mach-omap2/board-4430sdp.c

@@ -39,7 +39,7 @@ static struct platform_device *sdp4430_devices[] __initdata = {
 };
 
 static struct omap_uart_config sdp4430_uart_config __initdata = {
-	.enabled_uarts	= (1 << 0) | (1 << 1) | (1 << 2),
+	.enabled_uarts	= (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3),
 };
 
 static struct omap_lcd_config sdp4430_lcd_config __initdata = {

arch/arm/mach-omap2/serial.c

@@ -97,6 +97,16 @@ static struct plat_serial8250_port serial_platform_data[] = {
 		.regshift	= 2,
 		.uartclk	= OMAP24XX_BASE_BAUD * 16,
 	}, {
+#ifdef CONFIG_ARCH_OMAP4
+		.membase	= IO_ADDRESS(OMAP_UART4_BASE),
+		.mapbase	= OMAP_UART4_BASE,
+		.irq		= 70,
+		.flags		= UPF_BOOT_AUTOCONF,
+		.iotype		= UPIO_MEM,
+		.regshift	= 2,
+		.uartclk	= OMAP24XX_BASE_BAUD * 16,
+	}, {
+#endif
 		.flags		= 0
 	}
 };