davinci: fixed cpu reset

The reset procedure works on watchdog timer while before it was modifying
TIMER_1 registers.
Tested on DM365.

Signed-off-by: Davide Bonfanti <davide.bonfanti@bticino.it>

arch/arm/cpu/arm926ejs/davinci/reset.c

@@ -16,7 +16,7 @@
 void reset_cpu(unsigned long a)
 {
 	struct davinci_timer *const wdttimer =
-		(struct davinci_timer *)DAVINCI_TIMER1_BASE;
+		(struct davinci_timer *)DAVINCI_WDOG_BASE;
 	writel(0x08, &wdttimer->tgcr);
 	writel(readl(&wdttimer->tgcr) | 0x03, &wdttimer->tgcr);
 	writel(0, &wdttimer->tim12);