plat: marvell: armada: configure amb for all CPs

Before this patch the configuration took place only for CP0 and CP1, but
since new platforms can contains up to 3 CPs update is required.

Change-Id: Iebd50bbe7b9772063e2c4efb3a7ecbfd593e950d
Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>

plat/marvell/armada/a8k/common/mss/mss_bl2_setup.c

@@ -75,10 +75,8 @@ static int bl2_plat_mmap_init(void)
 	mmio_write_32(MVEBU_IO_WIN_BASE(MVEBU_AP0) + IOW_GCR_OFFSET, PIDI_TID);
 
 	/* Open AMB bridge required for MG access */
-	cp110_amb_init(MVEBU_CP_REGS_BASE(0));
-
-	if (CP_COUNT == 2)
-		cp110_amb_init(MVEBU_CP_REGS_BASE(1));
+	for (cp = 0; cp < CP_COUNT; cp++)
+		cp110_amb_init(MVEBU_CP_REGS_BASE(cp));
 
 	return 0;
 }