arm: remove cpu_init

move s3c44b0 to arch_cpu_init and as noone use cpu_init remove it

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/cpu/s3c44b0/cpu.c b/cpu/s3c44b0/cpu.c
index 7ef4a1f..bca38f8 100644
--- a/cpu/s3c44b0/cpu.c
+++ b/cpu/s3c44b0/cpu.c
@@ -32,7 +32,7 @@
 #include <command.h>
 #include <asm/hardware.h>
 
-int cpu_init (void)
+int arch_cpu_init (void)
 {
 	icache_enable();