Enable quantized data types for  CpuElementwiseUnary on Armv7a

- Adding fallback functions neon_qasymm8_signed_elementwise_unary() and
  neon_qasymm8_elementwise_unary()
- They would be called in case target is not aarch64

Resolves: COMPMID-5994
Change-Id: Id0db1e7cb0fe92f1eaef0b3a9ed2bea01b3f2a15
Signed-off-by: Ramy Elgammal <ramy.elgammal@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/9416
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Viet-Hoa Do <viet-hoa.do@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Benchmark: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/cpu/kernels/elementwise_unary/list.h b/src/cpu/kernels/elementwise_unary/list.h
index 04c3bb6..c1cfbb8 100644
--- a/src/cpu/kernels/elementwise_unary/list.h
+++ b/src/cpu/kernels/elementwise_unary/list.h
@@ -42,6 +42,8 @@
 DECLARE_ELEMETWISE_UNARY_KERNEL(neon_fp16_elementwise_unary);
 DECLARE_ELEMETWISE_UNARY_KERNEL(neon_s32_elementwise_unary);
 DECLARE_ELEMETWISE_UNARY_KERNEL(neon_q8_elementwise_unary);
+DECLARE_ELEMETWISE_UNARY_KERNEL(neon_qasymm8_signed_elementwise_unary);
+DECLARE_ELEMETWISE_UNARY_KERNEL(neon_qasymm8_elementwise_unary);
 
 #undef DECLARE_ELEMETWISE_UNARY_KERNEL