Convert CONFIG_CLOCKS to Kconfig

This converts the following to Kconfig:
   CONFIG_CLOCKS

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/common/Kconfig b/common/Kconfig
index 383eb4d..8f8a906 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -571,6 +571,10 @@
 	  So this config enable the late init code with the help of board_late_init
 	  function which should defined on respective boards.
 
+config CLOCKS
+	bool "Call set_cpu_clk_info"
+	depends on ARM
+
 config SYS_FSL_CLK
 	bool
 	depends on ARCH_LS1021A || FSL_LSCH2 || FSL_LSCH3 || \