COMPMID-424 Implemented reference implementation, new output valid region and validation tests (NEON and CL) for Scale

Change-Id: I056fa3588b807a97cacf0b8afaec56e37ffc92af
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/83872
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
diff --git a/src/core/CL/cl_kernels/scale.cl b/src/core/CL/cl_kernels/scale.cl
index 9ef33b8..b3398bd 100644
--- a/src/core/CL/cl_kernels/scale.cl
+++ b/src/core/CL/cl_kernels/scale.cl
@@ -118,6 +118,6 @@
     Image        in  = CONVERT_TO_IMAGE_STRUCT_NO_STEP(in);
     Image        out = CONVERT_TO_IMAGE_STRUCT(out);
     const float2 r   = (float2)(input_width / output_width, input_height / output_height);
-    const float8 tc  = clamp_to_border(transform_bilinear(get_current_coords(), r), input_width, input_height);
+    const float8 tc  = transform_bilinear(get_current_coords(), r);
     vstore4(bilinear_interpolate(&in, tc, input_width, input_height), 0, (__global DATA_TYPE *)out.ptr);
 }