xilinx: versal: board: use CONFIG_COUNTER_FREQUENCY

Since versal has CONFIG_COUNTER_FREQUENCY, so use it. And
COUNTER_FREQUENCY will be dropped.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/board/xilinx/versal/board.c b/board/xilinx/versal/board.c
index 9940f2a..2e2807e 100644
--- a/board/xilinx/versal/board.c
+++ b/board/xilinx/versal/board.c
@@ -74,7 +74,7 @@
 	 * Program freq register in System counter and
 	 * enable system counter.
 	 */
-	writel(COUNTER_FREQUENCY,
+	writel(CONFIG_COUNTER_FREQUENCY,
 	       &iou_scntr_secure->base_frequency_id_register);
 
 	debug("counter val 0x%x\n",