plat: marvell: mci: perform mci link tuning for all mci interfaces

This commit introduces two changes:
- remove hardcoded references to mci0 from the driver
- perform mci optimization for all mci interfaces

It fixes performance issues observed on cn9132 CP2.

Change-Id: I4e040cd54ff95c9134035ac89b87d8feb28e9eba
Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
diff --git a/plat/marvell/armada/a8k/common/plat_bl31_setup.c b/plat/marvell/armada/a8k/common/plat_bl31_setup.c
index 90e6672..621f43c 100644
--- a/plat/marvell/armada/a8k/common/plat_bl31_setup.c
+++ b/plat/marvell/armada/a8k/common/plat_bl31_setup.c
@@ -116,11 +116,8 @@
 		marvell_bl31_plat_arch_setup();
 
 	for (cp = 0; cp < CP_COUNT; cp++) {
-		if (cp >= 1) {
-			mci_link_tune(MVEBU_MCI0);
+		if (cp >= 1)
 			update_cp110_default_win(cp);
-		}
-
 
 		cp110_init(MVEBU_CP_REGS_BASE(cp),
 			   STREAM_ID_BASE + (cp * MAX_STREAM_ID_PER_CP));
@@ -134,6 +131,9 @@
 	 */
 	init_io_win(MVEBU_AP0);
 
+	for (cp = 1; cp < CP_COUNT; cp++)
+		mci_link_tune(cp - 1);
+
 	/* initialize IPC between MSS and ATF */
 	if (mailbox[MBOX_IDX_MAGIC] != MVEBU_MAILBOX_MAGIC_NUM ||
 	    mailbox[MBOX_IDX_SUSPEND_MAGIC] != MVEBU_MAILBOX_SUSPEND_STATE)