arm: mvebu: Add support for MV78260

This patch adds support for the dual core Armada XP variant, the
MV78260. It has some minor differences to the 4-core MV78460,
e.g. only 12 serdes lanes.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Luka Perkov <luka.perkov@sartura.hr>
Cc: Phil Sutter <phil@nwl.cc>
diff --git a/arch/arm/mach-mvebu/cpu.c b/arch/arm/mach-mvebu/cpu.c
index 570966a..1095f69 100644
--- a/arch/arm/mach-mvebu/cpu.c
+++ b/arch/arm/mach-mvebu/cpu.c
@@ -50,7 +50,7 @@
 {
 	u16 devid = (readl(MVEBU_REG_PCIE_DEVID) >> 16) & 0xffff;
 
-	if (devid == SOC_MV78460_ID)
+	if ((devid == SOC_MV78260_ID) || (devid == SOC_MV78460_ID))
 		return MVEBU_SOC_AXP;
 
 	if (devid == SOC_88F6810_ID || devid == SOC_88F6820_ID ||
@@ -69,6 +69,9 @@
 	puts("SoC:   ");
 
 	switch (devid) {
+	case SOC_MV78260_ID:
+		puts("MV78260-");
+		break;
 	case SOC_MV78460_ID:
 		puts("MV78460-");
 		break;