mx25: Define default SoC input clock frequencies

Define default SoC input clock frequencies for i.MX25 in order to get rid of
duplicated definitions.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Matthias Weisser <weisserm@arcor.de>
diff --git a/arch/arm/include/asm/arch-mx25/clock.h b/arch/arm/include/asm/arch-mx25/clock.h
index 0f47eaf..a313b80 100644
--- a/arch/arm/include/asm/arch-mx25/clock.h
+++ b/arch/arm/include/asm/arch-mx25/clock.h
@@ -26,6 +26,20 @@
 #ifndef __ASM_ARCH_CLOCK_H
 #define __ASM_ARCH_CLOCK_H
 
+#include <common.h>
+
+#ifdef CONFIG_MX25_HCLK_FREQ
+#define MXC_HCLK	CONFIG_MX25_HCLK_FREQ
+#else
+#define MXC_HCLK	24000000
+#endif
+
+#ifdef CONFIG_MX25_CLK32
+#define MXC_CLK32	CONFIG_MX25_CLK32
+#else
+#define MXC_CLK32	32768
+#endif
+
 enum mxc_clock {
 	MXC_CSI_CLK,
 	MXC_EPIT_CLK,