[PATCH] disable date alarm for malta rtc.

["Pavel Kiryukhin" <vksavl@gmail.com>]

RTC test that can be found in linux/Documentation/rtc.txt generally
hangs for malta boards.
Actually it waits for alarm interrupt that doesn't occure. Cause of
this -  Date alarm setting is not supported in rtc.c driver API. Some
chips (e.g. Intel82371 Southbridge RTC) supports this feature and uses
control register D for setting day of month. Just write "don't care"
(==0) value to this register.

Signed-off-by: Pavel Kiryukhin <vksavl@gmail.com>
---
diff --git a/arch/mips/mips-boards/generic/time.c
b/arch/mips/mips-boards/generic/time.c
index f02ce63..1c8043a 100644
--- a/arch/mips/mips-boards/generic/time.c
+++ b/arch/mips/mips-boards/generic/time.c
@@ -170,6 +170,10 @@ void __init plat_time_init(void)
         /* Set Data mode - binary. */
         CMOS_WRITE(CMOS_READ(RTC_CONTROL) | RTC_DM_BINARY, RTC_CONTROL);

+#ifdef CONFIG_MIPS_MALTA
+       /*we don't support Date Alarm*/
+       CMOS_WRITE(0, RTC_REG_D);
+#endif
        est_freq = estimate_cpu_frequency();

        printk("CPU frequency %d.%02d MHz\n", est_freq/1000000,