configs: sandbox: Enable composite clk

Enable composite clk for sandbox test

Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/configs/sandbox_defconfig b/configs/sandbox_defconfig
index 62594e3..7ff7122 100644
--- a/configs/sandbox_defconfig
+++ b/configs/sandbox_defconfig
@@ -93,6 +93,7 @@
 CONFIG_DM_BOOTCOUNT=y
 CONFIG_DM_BOOTCOUNT_RTC=y
 CONFIG_CLK=y
+CONFIG_CLK_COMPOSITE_CCF=y
 CONFIG_SANDBOX_CLK_CCF=y
 CONFIG_CPU=y
 CONFIG_DM_DEMO=y