arm: atmel: get rid of too many ifdeffery

Get rid of too many ifdeffery in usb ohci driver

Add following two configuration for USB clock selecting
- CONFIG_USB_ATMEL_CLK_SEL_PLLB: using PLLB as usb ohci input clock
- CONFIG_USB_ATMEL_CLK_SEL_UPLL: using UPLL as usb ohci input clock

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
diff --git a/include/configs/at91sam9x5ek.h b/include/configs/at91sam9x5ek.h
index 4a2ac9a..cb57be0 100644
--- a/include/configs/at91sam9x5ek.h
+++ b/include/configs/at91sam9x5ek.h
@@ -159,13 +159,14 @@
 #define CONFIG_USB_EHCI_ATMEL
 #define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS	2
 #else
+#define CONFIG_USB_ATMEL
+#define CONFIG_USB_ATMEL_CLK_SEL_UPLL
 #define CONFIG_USB_OHCI_NEW
 #define CONFIG_SYS_USB_OHCI_CPU_INIT
 #define CONFIG_SYS_USB_OHCI_REGS_BASE		ATMEL_BASE_OHCI
 #define CONFIG_SYS_USB_OHCI_SLOT_NAME		"at91sam9x5"
 #define CONFIG_SYS_USB_OHCI_MAX_ROOT_PORTS	3
 #endif
-#define CONFIG_USB_ATMEL
 #define CONFIG_USB_STORAGE
 #endif