nds32: Support AG101P timer DM.

Support AG101P timer device tree flow.

Signed-off-by: rick <rick@andestech.com>
diff --git a/configs/adp-ag101p_defconfig b/configs/adp-ag101p_defconfig
index 2a7302f..685a961 100644
--- a/configs/adp-ag101p_defconfig
+++ b/configs/adp-ag101p_defconfig
@@ -18,3 +18,5 @@
 CONFIG_DM=y
 CONFIG_DM_SERIAL=y
 CONFIG_SYS_NS16550=y
+CONFIG_TIMER=y
+CONFIG_AG101P_TIMER=y