davinci: add support for printing clock frequency

add support for printing various clock frequency info found
in SOC such as ARM core frequency, DSP core frequency and DDR
frequency as part of bdinfo command.

Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com>
Cc: Tom Rini <trini@ti.com>
diff --git a/include/configs/davinci_dm6467evm.h b/include/configs/davinci_dm6467evm.h
index ddfd3ed..e0fe6b5 100644
--- a/include/configs/davinci_dm6467evm.h
+++ b/include/configs/davinci_dm6467evm.h
@@ -150,6 +150,10 @@
 #define CONFIG_CMD_NAND
 #endif
 
+#ifdef CONFIG_CMD_BDI
+#define CONFIG_CLOCKS
+#endif
+
 #define CONFIG_MAX_RAM_BANK_SIZE	(256 << 20)	/* 256 MB */
 
 #define CONFIG_SYS_SDRAM_BASE		PHYS_SDRAM_1