arm: mvebu: dts: mvebu-u-boot.dtsi: Add "u-boot, dm-pre-reloc" to timer DT node

Adding the "u-boot,dm-pre-reloc" DT property to the timer node is
necesssary to support the timer in the early boot phases (e.g.
SPL & pre-reloc).

Signed-off-by: Stefan Roese <sr@denx.de>
Tested-by: Tony Dinh <mibodhi@gmail.com>

arch/arm/dts/mvebu-u-boot.dtsi

@@ -15,6 +15,17 @@
 	u-boot,dm-pre-reloc;
 };
 
+#ifdef CONFIG_ARMADA_375
+/* Armada 375 has multiple timers, use timer1 here */
+&timer1 {
+	u-boot,dm-pre-reloc;
+};
+#else
+&timer {
+	u-boot,dm-pre-reloc;
+};
+#endif
+
 #ifdef CONFIG_SPL_SPI
 &spi0 {
 	u-boot,dm-pre-reloc;