schedule: amd: set LL timer period to 500us for AMD ACP platforms

As per AMD internal hardware design requirement, the ACP DSP
scheduler tick must run at 500 microseconds (2kHz) instead of the
default 1ms (1kHz).

Guard the 500us value with CONFIG_AMD so non-AMD platforms retain
the existing 1ms default period unchanged.

Signed-off-by: Sneha Voona <sneha.voona@amd.com>

Author: sneha-voona

src/include/sof/schedule/ll_schedule_domain.h

@@ -22,7 +22,11 @@
 #include <stdbool.h>
 #include <stdint.h>
 
+#if defined(CONFIG_AMD)
+#define LL_TIMER_PERIOD_US	500ULL /* 500us period for AMD ACP platforms */
+#else
 #define LL_TIMER_PERIOD_US	1000ULL /* default period in microseconds */
+#endif
 
 /* Default ll watchdog timeout in microseconds.
  * It was decided to have a timeout of two periods to give a safe margin of time between the start