Decouple CpuActivationKernel

1- Data types were already decoupled. This commit arrange the folder struct of the activation kernel.
2- Refactor NEON CpuActivationKernel for floating-point cases.

Resolves COMPMID-4636
Change-Id: Ia4527244c84260dce1dd1d4bd4a9e3cfe2486d85
Signed-off-by: Dana Zlotnik <dana.zlotnik@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/6739
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Giorgio Arena <giorgio.arena@arm.com>
diff --git a/Android.bp b/Android.bp
index 5727706..5654b84 100644
--- a/Android.bp
+++ b/Android.bp
@@ -429,16 +429,16 @@
         "src/cpu/kernels/CpuTransposeKernel.cpp",
         "src/cpu/kernels/CpuWeightsReshapeKernel.cpp",
         "src/cpu/kernels/CpuWinogradConv2dKernel.cpp",
-        "src/cpu/kernels/activation/neon/fp16.cpp",
-        "src/cpu/kernels/activation/neon/fp32.cpp",
-        "src/cpu/kernels/activation/neon/qasymm8.cpp",
-        "src/cpu/kernels/activation/neon/qasymm8_signed.cpp",
-        "src/cpu/kernels/activation/neon/qsymm16.cpp",
-        "src/cpu/kernels/activation/sve/fp16.cpp",
-        "src/cpu/kernels/activation/sve/fp32.cpp",
-        "src/cpu/kernels/activation/sve/qasymm8.cpp",
-        "src/cpu/kernels/activation/sve/qasymm8_signed.cpp",
-        "src/cpu/kernels/activation/sve/qsymm16.cpp",
+        "src/cpu/kernels/activation/generic/neon/fp16.cpp",
+        "src/cpu/kernels/activation/generic/neon/fp32.cpp",
+        "src/cpu/kernels/activation/generic/neon/qasymm8.cpp",
+        "src/cpu/kernels/activation/generic/neon/qasymm8_signed.cpp",
+        "src/cpu/kernels/activation/generic/neon/qsymm16.cpp",
+        "src/cpu/kernels/activation/generic/sve/fp16.cpp",
+        "src/cpu/kernels/activation/generic/sve/fp32.cpp",
+        "src/cpu/kernels/activation/generic/sve2/qasymm8.cpp",
+        "src/cpu/kernels/activation/generic/sve2/qasymm8_signed.cpp",
+        "src/cpu/kernels/activation/generic/sve2/qsymm16.cpp",
         "src/cpu/kernels/add/generic/neon/fp16.cpp",
         "src/cpu/kernels/add/generic/neon/fp32.cpp",
         "src/cpu/kernels/add/generic/neon/impl.cpp",