[ARM] Fix couple of compiler warnings:

arch/arm/kernel/time.c: Fix time_before type warning.
arch/arm/common/amba.c: Fix snprintf compiler warning.

arch/arm/common/amba.c

@@ -50,7 +50,7 @@ static int amba_hotplug(struct device *dev, char **envp, int nr_env, char *buf,
 	if (nr_env < 2)
 		return -ENOMEM;
 
-	snprintf(buf, bufsz, "AMBA_ID=%08lx", pcdev->periphid);
+	snprintf(buf, bufsz, "AMBA_ID=%08x", pcdev->periphid);
 	*envp++ = buf;
 	*envp++ = NULL;
 	return 0;

arch/arm/kernel/time.c

@@ -116,7 +116,7 @@ static inline void do_set_rtc(void)
 		return;
 
 	if (next_rtc_update &&
-	    time_before(xtime.tv_sec, next_rtc_update))
+	    time_before((unsigned long)xtime.tv_sec, next_rtc_update))
 		return;
 
 	if (xtime.tv_nsec < 500000000 - ((unsigned) tick_nsec >> 1) &&