ARM: add missing call to arch_init_lowlevel

This got lost during the switch to implement the lowlevel
stuff in C.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arch/arm/cpu/start.c

@@ -56,6 +56,9 @@ void __naked __bare_init reset(void)
 	r |= 0xd3;
 	__asm__ __volatile__("msr cpsr, %0" : : "r"(r));
 
+#ifdef CONFIG_ARCH_HAS_LOWLEVEL_INIT
+	arch_init_lowlevel();
+#endif
 	__asm__ __volatile__ (
 		"bl __mmu_cache_flush;"
 		:

arch/arm/include/asm/barebox-arm.h

@@ -38,5 +38,6 @@ int	dram_init (void);
 
 void board_init_lowlevel(void);
 void board_init_lowlevel_return(void);
+void arch_init_lowlevel(void);
 
 #endif	/* _BAREBOX_ARM_H_ */