ARM: mvebu: a38x: use non-zero size for ddr scrubbing

Make ddr3_calc_mem_cs_size() global scope and use it in
ddr3_new_tip_ecc_scrub to correctly initialize all of DDR memory.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/drivers/ddr/marvell/a38x/xor.c b/drivers/ddr/marvell/a38x/xor.c
index 024cecd..f859596 100644
--- a/drivers/ddr/marvell/a38x/xor.c
+++ b/drivers/ddr/marvell/a38x/xor.c
@@ -347,6 +347,9 @@
 	for (cs_c = 0; cs_c < max_cs; cs_c++)
 		cs_ena |= 1 << cs_c;
 
+	/* assume that all CS have same size */
+	ddr3_calc_mem_cs_size(0, &cs_mem_size);
+
 	mv_sys_xor_init(max_cs, cs_ena, cs_mem_size, 0);
 	total_mem_size = max_cs * cs_mem_size;
 	mv_xor_mem_init(0, 0, total_mem_size, 0xdeadbeef, 0xdeadbeef);