[ARM] S3C24XX: Fix section mismatch for s3c_lookup_cpu

s3c_lookup_cpu is only used at init time, so make
it __init.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

arch/arm/plat-s3c24xx/cpu.c

@@ -169,9 +169,7 @@ static struct map_desc s3c_iodesc[] __initdata = {
 	IODESC_ENT(UART)
 };
 
-
-static struct cpu_table *
-s3c_lookup_cpu(unsigned long idcode)
+static struct cpu_table * __init s3c_lookup_cpu(unsigned long idcode)
 {
 	struct cpu_table *tab;
 	int count;