ARM: dts: at91: sama5d2: Pass bootph-all to the PIT timer

The PIT timer needs to be available early in the SPL phase,
otherwise SPL fails to boot and only prints:

Could not initialize timer (err -96)

Fix this problem by passing 'bootph-all' to the sama5d2 PIT node.

Signed-off-by: Fabio Estevam <festevam@denx.de>
diff --git a/arch/arm/dts/sama5d2.dtsi b/arch/arm/dts/sama5d2.dtsi
index 7b62fff..62191ff 100644
--- a/arch/arm/dts/sama5d2.dtsi
+++ b/arch/arm/dts/sama5d2.dtsi
@@ -778,6 +778,7 @@
 				compatible = "atmel,at91sam9260-pit";
 				reg = <0xf8048030 0x10>;
 				clocks = <&h32ck>;
+				bootph-all;
 			};
 
 			watchdog: watchdog@f8048040 {