Revert "ARM: dts: at91/trivial: change board name for B+S-R tests"

This reverts commit 4ea6e8d.

Author: cristibirsan

arch/arm/boot/dts/at91-sama5d2_xplained.dts

@@ -49,7 +49,7 @@
 #include <dt-bindings/gpio/gpio.h>
 
 / {
-	model = "Atmel SAMA5D2 Xplained B+S-R tests";
+	model = "Atmel SAMA5D2 Xplained";
 	compatible = "atmel,sama5d2-xplained", "atmel,sama5d2", "atmel,sama5";
 
 	chosen {