Convert CONFIG_CLOCKS to Kconfig

This converts the following to Kconfig:
   CONFIG_CLOCKS

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/syzygy_hub_defconfig b/configs/syzygy_hub_defconfig
index 43684de..33ae69b 100644
--- a/configs/syzygy_hub_defconfig
+++ b/configs/syzygy_hub_defconfig
@@ -24,6 +24,7 @@
 CONFIG_FIT_VERBOSE=y
 CONFIG_LEGACY_IMAGE_FORMAT=y
 CONFIG_USE_PREBOOT=y
+CONFIG_CLOCKS=y
 CONFIG_SPL_STACK_R=y
 CONFIG_SPL_OS_BOOT=y
 CONFIG_SPL_FALCON_BOOT_MMCSD=y