avr32: convert to dram_init()

Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/avr32/include/asm/u-boot.h b/arch/avr32/include/asm/u-boot.h
index 2387f8a..232350e 100644
--- a/arch/avr32/include/asm/u-boot.h
+++ b/arch/avr32/include/asm/u-boot.h
@@ -26,5 +26,6 @@
 #define IH_ARCH_DEFAULT IH_ARCH_AVR32
 
 int arch_cpu_init(void);
+int dram_init(void);
 
 #endif /* __ASM_U_BOOT_H__ */