ARM: dts: dra7-evm: Remove the wrong and undocumented compatible

"ti,dra752" is neither documented nor correct, since the device is actually a
dra742 device as rightly documented in dt bindings.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Cc: devicetree@vger.kernel.org
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/dra7-evm.dts

@@ -11,7 +11,7 @@
 
 / {
 	model = "TI DRA7";
-	compatible = "ti,dra7-evm", "ti,dra752", "ti,dra7";
+	compatible = "ti,dra7-evm", "ti,dra7";
 
 	memory {
 		device_type = "memory";