COMPMID-516 Increase tolerance rate of Scale, Conv, fully connected and GEMM

This patch also fix the scale kernel issue where it was calcuated the
scale factor inside the gpu but now in the CPU. The GPU and CPU gave
different result for simple float division operation

Change-Id: Ib6709cb6c41dcf4fc0fa4eb79e481430695bf40e
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/87266
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Moritz Pflanzer <moritz.pflanzer@arm.com>
diff --git a/tests/validation/CPP/Scale.cpp b/tests/validation/CPP/Scale.cpp
index ba34553..74489aa 100644
--- a/tests/validation/CPP/Scale.cpp
+++ b/tests/validation/CPP/Scale.cpp
@@ -166,4 +166,4 @@
 } // namespace reference
 } // namespace validation
 } // namespace test
-} // namespace arm_compute
\ No newline at end of file
+} // namespace arm_compute