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/include/configs/at91sam9rlek.h b/include/configs/at91sam9rlek.h
index fec48b6..2ccf958 100644
--- a/include/configs/at91sam9rlek.h
+++ b/include/configs/at91sam9rlek.h
@@ -30,15 +30,12 @@
 /* ARM asynchronous clock */
 #define AT91_CPU_NAME		"AT91SAM9RL"
 #define AT91_MAIN_CLOCK		12000000	/* 12 MHz crystal */
-#define AT91_MASTER_CLOCK	100000000	/* peripheral */
-#define AT91_CPU_CLOCK		200000000	/* cpu */
 #define CONFIG_SYS_HZ		1000000		/* 1us resolution */
 
-#define AT91_SLOW_CLOCK		32768	/* slow clock */
-
 #define CONFIG_ARM926EJS	1	/* This is an ARM926EJS Core	*/
 #define CONFIG_AT91SAM9RL	1	/* It's an Atmel AT91SAM9RL SoC*/
 #define CONFIG_AT91SAM9RLEK	1	/* on an AT91SAM9RLEK Board	*/
+#define CONFIG_ARCH_CPU_INIT
 #undef CONFIG_USE_IRQ			/* we don't need IRQ/FIQ stuff	*/
 
 #define CONFIG_CMDLINE_TAG	1	/* enable passing of ATAGs	*/