Update the ClConv2d heuristic

- Update the ClConv2d heuristic to call indirect convolution on Arm® Mali™-G77 Gpus
- Implement the indirect conv2d heuristic for selecting the block size

Resolves COMPMID-5713

Change-Id: If6ad49124561207153685c6abd4f54950a376fbc
Signed-off-by: Gian Marco Iodice <gianmarco.iodice@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/8886
Benchmark: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Gunes Bayir <gunes.bayir@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/arm_compute/core/Types.h b/arm_compute/core/Types.h
index d5a4125..24ef931 100644
--- a/arm_compute/core/Types.h
+++ b/arm_compute/core/Types.h
@@ -136,6 +136,7 @@
     GEMM,        /**< Convolution using GEMM */
     GEMM_CONV2D, /**< Direct 2D GEMM convolution */
     DIRECT,      /**< Direct convolution */
+    INDIRECT,    /**< Indirect convolution */
     WINOGRAD,    /**< Convolution using Winograd */
     FFT          /**< Convolution using FFT */
 };