COMPMID-1553: Add GPU detection for G52.

Change-Id: Ief61733d0e66fec0c67255ad899c76933109b797
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/146794
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Michalis Spyrou <michalis.spyrou@arm.com>
diff --git a/arm_compute/core/GPUTarget.h b/arm_compute/core/GPUTarget.h
index b7178ac..a43df3d 100644
--- a/arm_compute/core/GPUTarget.h
+++ b/arm_compute/core/GPUTarget.h
@@ -45,9 +45,11 @@
     G51           = 0x230,
     G51BIG        = 0x231,
     G51LIT        = 0x232,
-    G76           = 0x240,
-    TTRX          = 0x250,
-    TBOX          = 0x260
+    G52           = 0x240,
+    G52LIT        = 0x241,
+    G76           = 0x250,
+    TTRX          = 0x260,
+    TBOX          = 0x270
 };
 
 /** Enable bitwise operations on GPUTarget enumerations */