at91sam9/at91cap: improve clock framework

calculate dynamically the clock rate and pllb setting for usb

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/board/atmel/at91sam9261ek/at91sam9261ek.c b/board/atmel/at91sam9261ek/at91sam9261ek.c
index bae4092..a89cb8b 100644
--- a/board/atmel/at91sam9261ek/at91sam9261ek.c
+++ b/board/atmel/at91sam9261ek/at91sam9261ek.c
@@ -29,6 +29,7 @@
 #include <asm/arch/at91_common.h>
 #include <asm/arch/at91_pmc.h>
 #include <asm/arch/at91_rstc.h>
+#include <asm/arch/clk.h>
 #include <asm/arch/gpio.h>
 #include <asm/arch/io.h>
 #include <lcd.h>
@@ -185,7 +186,7 @@
 	lcd_printf ("at91support@atmel.com\n");
 	lcd_printf ("%s CPU at %s MHz\n",
 		AT91_CPU_NAME,
-		strmhz(temp, AT91_CPU_CLOCK));
+		strmhz(temp, get_cpu_clk_rate()));
 
 	dram_size = 0;
 	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)