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/at91cap9adk.h b/include/configs/at91cap9adk.h
index b978731..c61af08 100644
--- a/include/configs/at91cap9adk.h
+++ b/include/configs/at91cap9adk.h
@@ -30,16 +30,12 @@
 /* ARM asynchronous clock */
 #define AT91_CPU_NAME		"AT91CAP9"
 #define AT91_MAIN_CLOCK		12000000	/* 12 MHz crystal */
-#define AT91_MASTER_CLOCK	100000000	/* peripheral */
-#define AT91_CPU_CLOCK		200000000	/* cpu */
-#define CONFIG_SYS_AT91_PLLB	0x10073e01	/* PLLB settings for USB */
 #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_AT91CAP9		1	/* It's an Atmel AT91CAP9 SoC	*/
 #define CONFIG_AT91CAP9ADK	1	/* on an AT91CAP9ADK 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	*/