ARM: u300: add RTC to device tree

This adds the COH 901 331 RTC to the U300 device tree.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

arch/arm/boot/dts/ste-u300.dts

@@ -56,6 +56,13 @@ watchdog: watchdog@c0012000 {
 		interrupts = <3>;
 	};
 
+	rtc: rtc@c0017000 {
+		compatible = "stericsson,coh901331";
+		reg = <0xc0017000 0x1000>;
+		interrupt-parent = <&vicb>;
+		interrupts = <10>;
+	};
+
 	i2c0: i2c@c0004000 {
 		compatible = "st,ddci2c";
 		reg = <0xc0004000 0x1000>;

arch/arm/mach-u300/core.c

@@ -712,6 +712,8 @@ static struct of_dev_auxdata u300_auxdata_lookup[] __initdata = {
 		"u300-gpio", &u300_gpio_plat),
 	OF_DEV_AUXDATA("stericsson,coh901327", U300_WDOG_BASE,
 		"coh901327_wdog", NULL),
+	OF_DEV_AUXDATA("stericsson,coh901331", U300_RTC_BASE,
+		"rtc-coh901331", NULL),
 	OF_DEV_AUXDATA("arm,primecell", U300_UART0_BASE,
 		"uart0", &uart0_plat_data),
 	OF_DEV_AUXDATA("arm,primecell", U300_UART1_BASE,